Home / 10,215.18-14,119.11-9,427.86

Finding the Fourth Proportional to 10,215.18, 14,119.11 and 9,427.86

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Solution

The fourth proportional to 10,215.18, 14,119.11 and 9,427.86 is: 13,030.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215.18 : 14,119.11 = 9,427.86 : x
  2. Step 2: Convert to fraction form
    10,215.18/14,119.11 = 9,427.86/x
  3. Step 3: Cross multiply
    10,215.18x = 14,119.11 × 9,427.86
  4. Step 4: Simplify right side
    10,215.18x = 133,112,992.40
  5. Step 5: Solve for x
    x = 133,112,992.40/10,215.18
  6. Step 6: Final answer
    x = 13,030.90

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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.