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Finding the Fourth Proportional to 28,038.60, 42,024.60 and 14,884.20

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Solution

The fourth proportional to 28,038.60, 42,024.60 and 14,884.20 is: 22,308.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,038.60 : 42,024.60 = 14,884.20 : x
  2. Step 2: Convert to fraction form
    28,038.60/42,024.60 = 14,884.20/x
  3. Step 3: Cross multiply
    28,038.60x = 42,024.60 × 14,884.20
  4. Step 4: Simplify right side
    28,038.60x = 625,502,551.32
  5. Step 5: Solve for x
    x = 625,502,551.32/28,038.60
  6. Step 6: Final answer
    x = 22,308.62

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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.