Home / 20,626.47-28,490.23-15,903.74

Finding the Fourth Proportional to 20,626.47, 28,490.23 and 15,903.74

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Solution

The fourth proportional to 20,626.47, 28,490.23 and 15,903.74 is: 21,966.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,626.47 : 28,490.23 = 15,903.74 : x
  2. Step 2: Convert to fraction form
    20,626.47/28,490.23 = 15,903.74/x
  3. Step 3: Cross multiply
    20,626.47x = 28,490.23 × 15,903.74
  4. Step 4: Simplify right side
    20,626.47x = 453,101,301.57
  5. Step 5: Solve for x
    x = 453,101,301.57/20,626.47
  6. Step 6: Final answer
    x = 21,966.98

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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.