Home / 28,257.30-42,355.88-13,434.91

Finding the Fourth Proportional to 28,257.30, 42,355.88 and 13,434.91

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Solution

The fourth proportional to 28,257.30, 42,355.88 and 13,434.91 is: 20,138.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,257.30 : 42,355.88 = 13,434.91 : x
  2. Step 2: Convert to fraction form
    28,257.30/42,355.88 = 13,434.91/x
  3. Step 3: Cross multiply
    28,257.30x = 42,355.88 × 13,434.91
  4. Step 4: Simplify right side
    28,257.30x = 569,047,262.71
  5. Step 5: Solve for x
    x = 569,047,262.71/28,257.30
  6. Step 6: Final answer
    x = 20,138.06

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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.