Home / 15,509,649.15-21,389,382.45-9,708,959.70

Finding the Fourth Proportional to 15,509,649.15, 21,389,382.45 and 9,708,959.70

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Solution

The fourth proportional to 15,509,649.15, 21,389,382.45 and 9,708,959.70 is: 13,389,642.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,509,649.15 : 21,389,382.45 = 9,708,959.70 : x
  2. Step 2: Convert to fraction form
    15,509,649.15/21,389,382.45 = 9,708,959.70/x
  3. Step 3: Cross multiply
    15,509,649.15x = 21,389,382.45 × 9,708,959.70
  4. Step 4: Simplify right side
    15,509,649.15x = 207,668,652,214,937.25
  5. Step 5: Solve for x
    x = 207,668,652,214,937.25/15,509,649.15
  6. Step 6: Final answer
    x = 13,389,642.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.