Home / 38,015.28-52,461-20,787.66

Finding the Fourth Proportional to 38,015.28, 52,461 and 20,787.66

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Solution

The fourth proportional to 38,015.28, 52,461 and 20,787.66 is: 28,686.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,015.28 : 52,461 = 20,787.66 : x
  2. Step 2: Convert to fraction form
    38,015.28/52,461 = 20,787.66/x
  3. Step 3: Cross multiply
    38,015.28x = 52,461 × 20,787.66
  4. Step 4: Simplify right side
    38,015.28x = 1,090,541,431.26
  5. Step 5: Solve for x
    x = 1,090,541,431.26/38,015.28
  6. Step 6: Final answer
    x = 28,686.92

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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.