Home / 28,397.60-42,616.56-12,828.32

Finding the Fourth Proportional to 28,397.60, 42,616.56 and 12,828.32

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Solution

The fourth proportional to 28,397.60, 42,616.56 and 12,828.32 is: 19,251.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,397.60 : 42,616.56 = 12,828.32 : x
  2. Step 2: Convert to fraction form
    28,397.60/42,616.56 = 12,828.32/x
  3. Step 3: Cross multiply
    28,397.60x = 42,616.56 × 12,828.32
  4. Step 4: Simplify right side
    28,397.60x = 546,698,868.98
  5. Step 5: Solve for x
    x = 546,698,868.98/28,397.60
  6. Step 6: Final answer
    x = 19,251.59

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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.