Home / 28,553.10-42,836.13-15,405.18

Finding the Fourth Proportional to 28,553.10, 42,836.13 and 15,405.18

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Solution

The fourth proportional to 28,553.10, 42,836.13 and 15,405.18 is: 23,111.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,553.10 : 42,836.13 = 15,405.18 : x
  2. Step 2: Convert to fraction form
    28,553.10/42,836.13 = 15,405.18/x
  3. Step 3: Cross multiply
    28,553.10x = 42,836.13 × 15,405.18
  4. Step 4: Simplify right side
    28,553.10x = 659,898,293.15
  5. Step 5: Solve for x
    x = 659,898,293.15/28,553.10
  6. Step 6: Final answer
    x = 23,111.27

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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.