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Finding the Fourth Proportional to 28,708.61, 39,608.06 and 17,946.14

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Solution

The fourth proportional to 28,708.61, 39,608.06 and 17,946.14 is: 24,759.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,708.61 : 39,608.06 = 17,946.14 : x
  2. Step 2: Convert to fraction form
    28,708.61/39,608.06 = 17,946.14/x
  3. Step 3: Cross multiply
    28,708.61x = 39,608.06 × 17,946.14
  4. Step 4: Simplify right side
    28,708.61x = 710,811,502.12
  5. Step 5: Solve for x
    x = 710,811,502.12/28,708.61
  6. Step 6: Final answer
    x = 24,759.53

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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.