Home / 28,178.16-42,309.09-15,722.52

Finding the Fourth Proportional to 28,178.16, 42,309.09 and 15,722.52

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Solution

The fourth proportional to 28,178.16, 42,309.09 and 15,722.52 is: 23,607.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,178.16 : 42,309.09 = 15,722.52 : x
  2. Step 2: Convert to fraction form
    28,178.16/42,309.09 = 15,722.52/x
  3. Step 3: Cross multiply
    28,178.16x = 42,309.09 × 15,722.52
  4. Step 4: Simplify right side
    28,178.16x = 665,205,513.71
  5. Step 5: Solve for x
    x = 665,205,513.71/28,178.16
  6. Step 6: Final answer
    x = 23,607.13

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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.