Home / 13,438.04-18,545.64-7,470.68

Finding the Fourth Proportional to 13,438.04, 18,545.64 and 7,470.68

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Solution

The fourth proportional to 13,438.04, 18,545.64 and 7,470.68 is: 10,310.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.04 : 18,545.64 = 7,470.68 : x
  2. Step 2: Convert to fraction form
    13,438.04/18,545.64 = 7,470.68/x
  3. Step 3: Cross multiply
    13,438.04x = 18,545.64 × 7,470.68
  4. Step 4: Simplify right side
    13,438.04x = 138,548,541.84
  5. Step 5: Solve for x
    x = 138,548,541.84/13,438.04
  6. Step 6: Final answer
    x = 10,310.17

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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.