Home / 15,602.40-21,515.22-13,371.66

Finding the Fourth Proportional to 15,602.40, 21,515.22 and 13,371.66

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Solution

The fourth proportional to 15,602.40, 21,515.22 and 13,371.66 is: 18,439.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,602.40 : 21,515.22 = 13,371.66 : x
  2. Step 2: Convert to fraction form
    15,602.40/21,515.22 = 13,371.66/x
  3. Step 3: Cross multiply
    15,602.40x = 21,515.22 × 13,371.66
  4. Step 4: Simplify right side
    15,602.40x = 287,694,206.67
  5. Step 5: Solve for x
    x = 287,694,206.67/15,602.40
  6. Step 6: Final answer
    x = 18,439.10

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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.