Home / 28,219.55-38,943.42-15,473.90

Finding the Fourth Proportional to 28,219.55, 38,943.42 and 15,473.90

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Solution

The fourth proportional to 28,219.55, 38,943.42 and 15,473.90 is: 21,354.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.55 : 38,943.42 = 15,473.90 : x
  2. Step 2: Convert to fraction form
    28,219.55/38,943.42 = 15,473.90/x
  3. Step 3: Cross multiply
    28,219.55x = 38,943.42 × 15,473.90
  4. Step 4: Simplify right side
    28,219.55x = 602,606,586.74
  5. Step 5: Solve for x
    x = 602,606,586.74/28,219.55
  6. Step 6: Final answer
    x = 21,354.22

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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.