Home / 28,239.39-42,373.94-13,445.55

Finding the Fourth Proportional to 28,239.39, 42,373.94 and 13,445.55

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Solution

The fourth proportional to 28,239.39, 42,373.94 and 13,445.55 is: 20,175.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,239.39 : 42,373.94 = 13,445.55 : x
  2. Step 2: Convert to fraction form
    28,239.39/42,373.94 = 13,445.55/x
  3. Step 3: Cross multiply
    28,239.39x = 42,373.94 × 13,445.55
  4. Step 4: Simplify right side
    28,239.39x = 569,740,861.74
  5. Step 5: Solve for x
    x = 569,740,861.74/28,239.39
  6. Step 6: Final answer
    x = 20,175.40

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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.