Home / 10,516,011.30-15,774,016.95-8,720,921.70

Finding the Fourth Proportional to 10,516,011.30, 15,774,016.95 and 8,720,921.70

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Solution

The fourth proportional to 10,516,011.30, 15,774,016.95 and 8,720,921.70 is: 13,081,382.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,516,011.30 : 15,774,016.95 = 8,720,921.70 : x
  2. Step 2: Convert to fraction form
    10,516,011.30/15,774,016.95 = 8,720,921.70/x
  3. Step 3: Cross multiply
    10,516,011.30x = 15,774,016.95 × 8,720,921.70
  4. Step 4: Simplify right side
    10,516,011.30x = 137,563,966,715,422.80
  5. Step 5: Solve for x
    x = 137,563,966,715,422.80/10,516,011.30
  6. Step 6: Final answer
    x = 13,081,382.55

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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.