Home / 21,315.60-31,947.87-15,066.24

Finding the Fourth Proportional to 21,315.60, 31,947.87 and 15,066.24

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Solution

The fourth proportional to 21,315.60, 31,947.87 and 15,066.24 is: 22,581.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,315.60 : 31,947.87 = 15,066.24 : x
  2. Step 2: Convert to fraction form
    21,315.60/31,947.87 = 15,066.24/x
  3. Step 3: Cross multiply
    21,315.60x = 31,947.87 × 15,066.24
  4. Step 4: Simplify right side
    21,315.60x = 481,334,276.91
  5. Step 5: Solve for x
    x = 481,334,276.91/21,315.60
  6. Step 6: Final answer
    x = 22,581.31

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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.