Home / 21,124,702,971.60-31,687,054,457.40-18,920,710,856.40

Finding the Fourth Proportional to 21,124,702,971.60, 31,687,054,457.40 and 18,920,710,856.40

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Solution

The fourth proportional to 21,124,702,971.60, 31,687,054,457.40 and 18,920,710,856.40 is: 28,381,066,284.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124,702,971.60 : 31,687,054,457.40 = 18,920,710,856.40 : x
  2. Step 2: Convert to fraction form
    21,124,702,971.60/31,687,054,457.40 = 18,920,710,856.40/x
  3. Step 3: Cross multiply
    21,124,702,971.60x = 31,687,054,457.40 × 18,920,710,856.40
  4. Step 4: Simplify right side
    21,124,702,971.60x = 599,541,595,279,466,299,392
  5. Step 5: Solve for x
    x = 599,541,595,279,466,299,392/21,124,702,971.60
  6. Step 6: Final answer
    x = 28,381,066,284.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.