Home / 28,022.15-38,685.60-21,959.91

Finding the Fourth Proportional to 28,022.15, 38,685.60 and 21,959.91

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Solution

The fourth proportional to 28,022.15, 38,685.60 and 21,959.91 is: 30,316.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,022.15 : 38,685.60 = 21,959.91 : x
  2. Step 2: Convert to fraction form
    28,022.15/38,685.60 = 21,959.91/x
  3. Step 3: Cross multiply
    28,022.15x = 38,685.60 × 21,959.91
  4. Step 4: Simplify right side
    28,022.15x = 849,532,294.30
  5. Step 5: Solve for x
    x = 849,532,294.30/28,022.15
  6. Step 6: Final answer
    x = 30,316.45

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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.