Home / 28,113.16-38,789.94-16,938.76

Finding the Fourth Proportional to 28,113.16, 38,789.94 and 16,938.76

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Solution

The fourth proportional to 28,113.16, 38,789.94 and 16,938.76 is: 23,371.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,113.16 : 38,789.94 = 16,938.76 : x
  2. Step 2: Convert to fraction form
    28,113.16/38,789.94 = 16,938.76/x
  3. Step 3: Cross multiply
    28,113.16x = 38,789.94 × 16,938.76
  4. Step 4: Simplify right side
    28,113.16x = 657,053,484.07
  5. Step 5: Solve for x
    x = 657,053,484.07/28,113.16
  6. Step 6: Final answer
    x = 23,371.74

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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.