Home / 28,008.95-38,640.20-16,672.08

Finding the Fourth Proportional to 28,008.95, 38,640.20 and 16,672.08

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Solution

The fourth proportional to 28,008.95, 38,640.20 and 16,672.08 is: 23,000.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,008.95 : 38,640.20 = 16,672.08 : x
  2. Step 2: Convert to fraction form
    28,008.95/38,640.20 = 16,672.08/x
  3. Step 3: Cross multiply
    28,008.95x = 38,640.20 × 16,672.08
  4. Step 4: Simplify right side
    28,008.95x = 644,212,422.26
  5. Step 5: Solve for x
    x = 644,212,422.26/28,008.95
  6. Step 6: Final answer
    x = 23,000.24

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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.