Home / 19,989.18-27,574.02-12,436.74

Finding the Fourth Proportional to 19,989.18, 27,574.02 and 12,436.74

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Solution

The fourth proportional to 19,989.18, 27,574.02 and 12,436.74 is: 17,155.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,989.18 : 27,574.02 = 12,436.74 : x
  2. Step 2: Convert to fraction form
    19,989.18/27,574.02 = 12,436.74/x
  3. Step 3: Cross multiply
    19,989.18x = 27,574.02 × 12,436.74
  4. Step 4: Simplify right side
    19,989.18x = 342,930,917.49
  5. Step 5: Solve for x
    x = 342,930,917.49/19,989.18
  6. Step 6: Final answer
    x = 17,155.83

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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.