Home / 15,315,974.20-21,137,090.04-9,357,932.08

Finding the Fourth Proportional to 15,315,974.20, 21,137,090.04 and 9,357,932.08

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Solution

The fourth proportional to 15,315,974.20, 21,137,090.04 and 9,357,932.08 is: 12,914,585.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,315,974.20 : 21,137,090.04 = 9,357,932.08 : x
  2. Step 2: Convert to fraction form
    15,315,974.20/21,137,090.04 = 9,357,932.08/x
  3. Step 3: Cross multiply
    15,315,974.20x = 21,137,090.04 × 9,357,932.08
  4. Step 4: Simplify right side
    15,315,974.20x = 197,799,452,963,164.47
  5. Step 5: Solve for x
    x = 197,799,452,963,164.47/15,315,974.20
  6. Step 6: Final answer
    x = 12,914,585.15

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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.