Home / 28,134.68-38,825.52-15,559.16

Finding the Fourth Proportional to 28,134.68, 38,825.52 and 15,559.16

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Solution

The fourth proportional to 28,134.68, 38,825.52 and 15,559.16 is: 21,471.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,134.68 : 38,825.52 = 15,559.16 : x
  2. Step 2: Convert to fraction form
    28,134.68/38,825.52 = 15,559.16/x
  3. Step 3: Cross multiply
    28,134.68x = 38,825.52 × 15,559.16
  4. Step 4: Simplify right side
    28,134.68x = 604,092,477.76
  5. Step 5: Solve for x
    x = 604,092,477.76/28,134.68
  6. Step 6: Final answer
    x = 21,471.45

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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.