Home / 28,478.79-39,282.57-17,866.17

Finding the Fourth Proportional to 28,478.79, 39,282.57 and 17,866.17

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Solution

The fourth proportional to 28,478.79, 39,282.57 and 17,866.17 is: 24,643.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,478.79 : 39,282.57 = 17,866.17 : x
  2. Step 2: Convert to fraction form
    28,478.79/39,282.57 = 17,866.17/x
  3. Step 3: Cross multiply
    28,478.79x = 39,282.57 × 17,866.17
  4. Step 4: Simplify right side
    28,478.79x = 701,829,073.66
  5. Step 5: Solve for x
    x = 701,829,073.66/28,478.79
  6. Step 6: Final answer
    x = 24,643.92

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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.