Home / 31,148-42,984.78-17,001.20

Finding the Fourth Proportional to 31,148, 42,984.78 and 17,001.20

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Solution

The fourth proportional to 31,148, 42,984.78 and 17,001.20 is: 23,461.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,148 : 42,984.78 = 17,001.20 : x
  2. Step 2: Convert to fraction form
    31,148/42,984.78 = 17,001.20/x
  3. Step 3: Cross multiply
    31,148x = 42,984.78 × 17,001.20
  4. Step 4: Simplify right side
    31,148x = 730,792,841.74
  5. Step 5: Solve for x
    x = 730,792,841.74/31,148
  6. Step 6: Final answer
    x = 23,461.95

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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.