Home / 21,124,702,986.10-31,687,054,479.15-18,920,710,870.90

Finding the Fourth Proportional to 21,124,702,986.10, 31,687,054,479.15 and 18,920,710,870.90

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Solution

The fourth proportional to 21,124,702,986.10, 31,687,054,479.15 and 18,920,710,870.90 is: 28,381,066,306.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124,702,986.10 : 31,687,054,479.15 = 18,920,710,870.90 : x
  2. Step 2: Convert to fraction form
    21,124,702,986.10/31,687,054,479.15 = 18,920,710,870.90/x
  3. Step 3: Cross multiply
    21,124,702,986.10x = 31,687,054,479.15 × 18,920,710,870.90
  4. Step 4: Simplify right side
    21,124,702,986.10x = 599,541,596,150,454,026,240
  5. Step 5: Solve for x
    x = 599,541,596,150,454,026,240/21,124,702,986.10
  6. Step 6: Final answer
    x = 28,381,066,306.35

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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.