Home / 13,397.76-18,488.00-7,429.21

Finding the Fourth Proportional to 13,397.76, 18,488.00 and 7,429.21

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Solution

The fourth proportional to 13,397.76, 18,488.00 and 7,429.21 is: 10,251.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.76 : 18,488.00 = 7,429.21 : x
  2. Step 2: Convert to fraction form
    13,397.76/18,488.00 = 7,429.21/x
  3. Step 3: Cross multiply
    13,397.76x = 18,488.00 × 7,429.21
  4. Step 4: Simplify right side
    13,397.76x = 137,351,206.83
  5. Step 5: Solve for x
    x = 137,351,206.83/13,397.76
  6. Step 6: Final answer
    x = 10,251.80

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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.