Home / 15,878.68-21,862.71-13,483.61

Finding the Fourth Proportional to 15,878.68, 21,862.71 and 13,483.61

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Solution

The fourth proportional to 15,878.68, 21,862.71 and 13,483.61 is: 18,565.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,878.68 : 21,862.71 = 13,483.61 : x
  2. Step 2: Convert to fraction form
    15,878.68/21,862.71 = 13,483.61/x
  3. Step 3: Cross multiply
    15,878.68x = 21,862.71 × 13,483.61
  4. Step 4: Simplify right side
    15,878.68x = 294,788,350.83
  5. Step 5: Solve for x
    x = 294,788,350.83/15,878.68
  6. Step 6: Final answer
    x = 18,565.04

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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.