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Finding the Fourth Proportional to 28,152.90, 42,205.05 and 14,301.90

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Solution

The fourth proportional to 28,152.90, 42,205.05 and 14,301.90 is: 21,440.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,152.90 : 42,205.05 = 14,301.90 : x
  2. Step 2: Convert to fraction form
    28,152.90/42,205.05 = 14,301.90/x
  3. Step 3: Cross multiply
    28,152.90x = 42,205.05 × 14,301.90
  4. Step 4: Simplify right side
    28,152.90x = 603,612,404.60
  5. Step 5: Solve for x
    x = 603,612,404.60/28,152.90
  6. Step 6: Final answer
    x = 21,440.51

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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.