Home / 13,545,042.12-18,686,837.28-7,740,710.04

Finding the Fourth Proportional to 13,545,042.12, 18,686,837.28 and 7,740,710.04

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Solution

The fourth proportional to 13,545,042.12, 18,686,837.28 and 7,740,710.04 is: 10,679,139.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545,042.12 : 18,686,837.28 = 7,740,710.04 : x
  2. Step 2: Convert to fraction form
    13,545,042.12/18,686,837.28 = 7,740,710.04/x
  3. Step 3: Cross multiply
    13,545,042.12x = 18,686,837.28 × 7,740,710.04
  4. Step 4: Simplify right side
    13,545,042.12x = 144,649,388,949,142.31
  5. Step 5: Solve for x
    x = 144,649,388,949,142.31/13,545,042.12
  6. Step 6: Final answer
    x = 10,679,139.10

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1.5x scale

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.