Home / 28,961.60-39,968.16-17,787.20

Finding the Fourth Proportional to 28,961.60, 39,968.16 and 17,787.20

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Solution

The fourth proportional to 28,961.60, 39,968.16 and 17,787.20 is: 24,547.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,961.60 : 39,968.16 = 17,787.20 : x
  2. Step 2: Convert to fraction form
    28,961.60/39,968.16 = 17,787.20/x
  3. Step 3: Cross multiply
    28,961.60x = 39,968.16 × 17,787.20
  4. Step 4: Simplify right side
    28,961.60x = 710,921,655.55
  5. Step 5: Solve for x
    x = 710,921,655.55/28,961.60
  6. Step 6: Final answer
    x = 24,547.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.