Home / 31,148.78-42,984.86-17,000.69

Finding the Fourth Proportional to 31,148.78, 42,984.86 and 17,000.69

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Solution

The fourth proportional to 31,148.78, 42,984.86 and 17,000.69 is: 23,460.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,148.78 : 42,984.86 = 17,000.69 : x
  2. Step 2: Convert to fraction form
    31,148.78/42,984.86 = 17,000.69/x
  3. Step 3: Cross multiply
    31,148.78x = 42,984.86 × 17,000.69
  4. Step 4: Simplify right side
    31,148.78x = 730,771,979.63
  5. Step 5: Solve for x
    x = 730,771,979.63/31,148.78
  6. Step 6: Final answer
    x = 23,460.70

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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.