Home / 28,422.90-39,216.96-16,479.45

Finding the Fourth Proportional to 28,422.90, 39,216.96 and 16,479.45

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Solution

The fourth proportional to 28,422.90, 39,216.96 and 16,479.45 is: 22,737.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,422.90 : 39,216.96 = 16,479.45 : x
  2. Step 2: Convert to fraction form
    28,422.90/39,216.96 = 16,479.45/x
  3. Step 3: Cross multiply
    28,422.90x = 39,216.96 × 16,479.45
  4. Step 4: Simplify right side
    28,422.90x = 646,273,931.47
  5. Step 5: Solve for x
    x = 646,273,931.47/28,422.90
  6. Step 6: Final answer
    x = 22,737.79

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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.