Home / 15,572.13-21,490.13-8,858.37

Finding the Fourth Proportional to 15,572.13, 21,490.13 and 8,858.37

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Solution

The fourth proportional to 15,572.13, 21,490.13 and 8,858.37 is: 12,224.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,572.13 : 21,490.13 = 8,858.37 : x
  2. Step 2: Convert to fraction form
    15,572.13/21,490.13 = 8,858.37/x
  3. Step 3: Cross multiply
    15,572.13x = 21,490.13 × 8,858.37
  4. Step 4: Simplify right side
    15,572.13x = 190,367,371.15
  5. Step 5: Solve for x
    x = 190,367,371.15/15,572.13
  6. Step 6: Final answer
    x = 12,224.88

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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.