Home / 10,143.74-15,128.85-9,791.03

Finding the Fourth Proportional to 10,143.74, 15,128.85 and 9,791.03

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Solution

The fourth proportional to 10,143.74, 15,128.85 and 9,791.03 is: 14,602.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,143.74 : 15,128.85 = 9,791.03 : x
  2. Step 2: Convert to fraction form
    10,143.74/15,128.85 = 9,791.03/x
  3. Step 3: Cross multiply
    10,143.74x = 15,128.85 × 9,791.03
  4. Step 4: Simplify right side
    10,143.74x = 148,127,024.22
  5. Step 5: Solve for x
    x = 148,127,024.22/10,143.74
  6. Step 6: Final answer
    x = 14,602.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.