Home / 13,386.02-18,470.96-7,417.40

Finding the Fourth Proportional to 13,386.02, 18,470.96 and 7,417.40

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Solution

The fourth proportional to 13,386.02, 18,470.96 and 7,417.40 is: 10,235.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.02 : 18,470.96 = 7,417.40 : x
  2. Step 2: Convert to fraction form
    13,386.02/18,470.96 = 7,417.40/x
  3. Step 3: Cross multiply
    13,386.02x = 18,470.96 × 7,417.40
  4. Step 4: Simplify right side
    13,386.02x = 137,006,498.70
  5. Step 5: Solve for x
    x = 137,006,498.70/13,386.02
  6. Step 6: Final answer
    x = 10,235.04

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Half scale
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Double scale
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Similar ratio
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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.