Home / 20,440.18-28,127.74-18,087.94

Finding the Fourth Proportional to 20,440.18, 28,127.74 and 18,087.94

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Solution

The fourth proportional to 20,440.18, 28,127.74 and 18,087.94 is: 24,890.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.18 : 28,127.74 = 18,087.94 : x
  2. Step 2: Convert to fraction form
    20,440.18/28,127.74 = 18,087.94/x
  3. Step 3: Cross multiply
    20,440.18x = 28,127.74 × 18,087.94
  4. Step 4: Simplify right side
    20,440.18x = 508,772,642.38
  5. Step 5: Solve for x
    x = 508,772,642.38/20,440.18
  6. Step 6: Final answer
    x = 24,890.82

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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.