Home / 13,545,043.12-18,686,838.66-7,740,711.04

Finding the Fourth Proportional to 13,545,043.12, 18,686,838.66 and 7,740,711.04

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Solution

The fourth proportional to 13,545,043.12, 18,686,838.66 and 7,740,711.04 is: 10,679,140.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545,043.12 : 18,686,838.66 = 7,740,711.04 : x
  2. Step 2: Convert to fraction form
    13,545,043.12/18,686,838.66 = 7,740,711.04/x
  3. Step 3: Cross multiply
    13,545,043.12x = 18,686,838.66 × 7,740,711.04
  4. Step 4: Simplify right side
    13,545,043.12x = 144,649,418,318,160.81
  5. Step 5: Solve for x
    x = 144,649,418,318,160.81/13,545,043.12
  6. Step 6: Final answer
    x = 10,679,140.48

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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.