Home / 15,131.48-20,881.40-8,417.52

Finding the Fourth Proportional to 15,131.48, 20,881.40 and 8,417.52

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Solution

The fourth proportional to 15,131.48, 20,881.40 and 8,417.52 is: 11,616.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,131.48 : 20,881.40 = 8,417.52 : x
  2. Step 2: Convert to fraction form
    15,131.48/20,881.40 = 8,417.52/x
  3. Step 3: Cross multiply
    15,131.48x = 20,881.40 × 8,417.52
  4. Step 4: Simplify right side
    15,131.48x = 175,769,560.04
  5. Step 5: Solve for x
    x = 175,769,560.04/15,131.48
  6. Step 6: Final answer
    x = 11,616.16

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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.