Home / 28,429.47-39,232.17-15,683.83

Finding the Fourth Proportional to 28,429.47, 39,232.17 and 15,683.83

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Solution

The fourth proportional to 28,429.47, 39,232.17 and 15,683.83 is: 21,643.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,429.47 : 39,232.17 = 15,683.83 : x
  2. Step 2: Convert to fraction form
    28,429.47/39,232.17 = 15,683.83/x
  3. Step 3: Cross multiply
    28,429.47x = 39,232.17 × 15,683.83
  4. Step 4: Simplify right side
    28,429.47x = 615,310,586.73
  5. Step 5: Solve for x
    x = 615,310,586.73/28,429.47
  6. Step 6: Final answer
    x = 21,643.41

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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.