Home / 10,130.31-15,178.03-9,103.10

Finding the Fourth Proportional to 10,130.31, 15,178.03 and 9,103.10

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Solution

The fourth proportional to 10,130.31, 15,178.03 and 9,103.10 is: 13,638.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,130.31 : 15,178.03 = 9,103.10 : x
  2. Step 2: Convert to fraction form
    10,130.31/15,178.03 = 9,103.10/x
  3. Step 3: Cross multiply
    10,130.31x = 15,178.03 × 9,103.10
  4. Step 4: Simplify right side
    10,130.31x = 138,167,026.25
  5. Step 5: Solve for x
    x = 138,167,026.25/10,130.31
  6. Step 6: Final answer
    x = 13,638.97

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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.