Home / 28,343.45-42,515.88-13,553.93

Finding the Fourth Proportional to 28,343.45, 42,515.88 and 13,553.93

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Solution

The fourth proportional to 28,343.45, 42,515.88 and 13,553.93 is: 20,331.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,343.45 : 42,515.88 = 13,553.93 : x
  2. Step 2: Convert to fraction form
    28,343.45/42,515.88 = 13,553.93/x
  3. Step 3: Cross multiply
    28,343.45x = 42,515.88 × 13,553.93
  4. Step 4: Simplify right side
    28,343.45x = 576,257,261.41
  5. Step 5: Solve for x
    x = 576,257,261.41/28,343.45
  6. Step 6: Final answer
    x = 20,331.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.