Home / 28,108.96-42,165.80-11,470.12

Finding the Fourth Proportional to 28,108.96, 42,165.80 and 11,470.12

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Solution

The fourth proportional to 28,108.96, 42,165.80 and 11,470.12 is: 17,206.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,108.96 : 42,165.80 = 11,470.12 : x
  2. Step 2: Convert to fraction form
    28,108.96/42,165.80 = 11,470.12/x
  3. Step 3: Cross multiply
    28,108.96x = 42,165.80 × 11,470.12
  4. Step 4: Simplify right side
    28,108.96x = 483,646,785.90
  5. Step 5: Solve for x
    x = 483,646,785.90/28,108.96
  6. Step 6: Final answer
    x = 17,206.14

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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.