Home / 28,915.10-43,372.65-17,785.70

Finding the Fourth Proportional to 28,915.10, 43,372.65 and 17,785.70

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Solution

The fourth proportional to 28,915.10, 43,372.65 and 17,785.70 is: 26,678.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,915.10 : 43,372.65 = 17,785.70 : x
  2. Step 2: Convert to fraction form
    28,915.10/43,372.65 = 17,785.70/x
  3. Step 3: Cross multiply
    28,915.10x = 43,372.65 × 17,785.70
  4. Step 4: Simplify right side
    28,915.10x = 771,412,941.11
  5. Step 5: Solve for x
    x = 771,412,941.11/28,915.10
  6. Step 6: Final answer
    x = 26,678.55

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Similar ratio
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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.