Home / 28,125.40-42,188.10-17,627.80

Finding the Fourth Proportional to 28,125.40, 42,188.10 and 17,627.80

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Solution

The fourth proportional to 28,125.40, 42,188.10 and 17,627.80 is: 26,441.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,125.40 : 42,188.10 = 17,627.80 : x
  2. Step 2: Convert to fraction form
    28,125.40/42,188.10 = 17,627.80/x
  3. Step 3: Cross multiply
    28,125.40x = 42,188.10 × 17,627.80
  4. Step 4: Simplify right side
    28,125.40x = 743,683,389.18
  5. Step 5: Solve for x
    x = 743,683,389.18/28,125.40
  6. Step 6: Final answer
    x = 26,441.70

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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.