Home / 20,570.24-28,359.49-15,444.06

Finding the Fourth Proportional to 20,570.24, 28,359.49 and 15,444.06

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Solution

The fourth proportional to 20,570.24, 28,359.49 and 15,444.06 is: 21,292.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,570.24 : 28,359.49 = 15,444.06 : x
  2. Step 2: Convert to fraction form
    20,570.24/28,359.49 = 15,444.06/x
  3. Step 3: Cross multiply
    20,570.24x = 28,359.49 × 15,444.06
  4. Step 4: Simplify right side
    20,570.24x = 437,985,665.13
  5. Step 5: Solve for x
    x = 437,985,665.13/20,570.24
  6. Step 6: Final answer
    x = 21,292.20

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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.