Home / 13,397.70-18,488.61-7,429.22

Finding the Fourth Proportional to 13,397.70, 18,488.61 and 7,429.22

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Solution

The fourth proportional to 13,397.70, 18,488.61 and 7,429.22 is: 10,252.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.70 : 18,488.61 = 7,429.22 : x
  2. Step 2: Convert to fraction form
    13,397.70/18,488.61 = 7,429.22/x
  3. Step 3: Cross multiply
    13,397.70x = 18,488.61 × 7,429.22
  4. Step 4: Simplify right side
    13,397.70x = 137,355,858.74
  5. Step 5: Solve for x
    x = 137,355,858.74/13,397.70
  6. Step 6: Final answer
    x = 10,252.20

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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.