Home / 21,124,702,929.60-31,687,054,394.40-18,920,710,814.40

Finding the Fourth Proportional to 21,124,702,929.60, 31,687,054,394.40 and 18,920,710,814.40

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Solution

The fourth proportional to 21,124,702,929.60, 31,687,054,394.40 and 18,920,710,814.40 is: 28,381,066,221.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124,702,929.60 : 31,687,054,394.40 = 18,920,710,814.40 : x
  2. Step 2: Convert to fraction form
    21,124,702,929.60/31,687,054,394.40 = 18,920,710,814.40/x
  3. Step 3: Cross multiply
    21,124,702,929.60x = 31,687,054,394.40 × 18,920,710,814.40
  4. Step 4: Simplify right side
    21,124,702,929.60x = 599,541,592,756,605,157,376
  5. Step 5: Solve for x
    x = 599,541,592,756,605,157,376/21,124,702,929.60
  6. Step 6: Final answer
    x = 28,381,066,221.60

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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.