Home / 10,221.39-15,320.57-5,030.91

Finding the Fourth Proportional to 10,221.39, 15,320.57 and 5,030.91

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Solution

The fourth proportional to 10,221.39, 15,320.57 and 5,030.91 is: 7,540.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,221.39 : 15,320.57 = 5,030.91 : x
  2. Step 2: Convert to fraction form
    10,221.39/15,320.57 = 5,030.91/x
  3. Step 3: Cross multiply
    10,221.39x = 15,320.57 × 5,030.91
  4. Step 4: Simplify right side
    10,221.39x = 77,076,383.66
  5. Step 5: Solve for x
    x = 77,076,383.66/10,221.39
  6. Step 6: Final answer
    x = 7,540.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.