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Finding the Fourth Proportional to 28,133.52, 38,825.04 and 15,559.08

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Solution

The fourth proportional to 28,133.52, 38,825.04 and 15,559.08 is: 21,471.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,133.52 : 38,825.04 = 15,559.08 : x
  2. Step 2: Convert to fraction form
    28,133.52/38,825.04 = 15,559.08/x
  3. Step 3: Cross multiply
    28,133.52x = 38,825.04 × 15,559.08
  4. Step 4: Simplify right side
    28,133.52x = 604,081,903.36
  5. Step 5: Solve for x
    x = 604,081,903.36/28,133.52
  6. Step 6: Final answer
    x = 21,471.96

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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.