Home / 10,266.30-15,387.30-9,221.40

Finding the Fourth Proportional to 10,266.30, 15,387.30 and 9,221.40

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Solution

The fourth proportional to 10,266.30, 15,387.30 and 9,221.40 is: 13,821.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,266.30 : 15,387.30 = 9,221.40 : x
  2. Step 2: Convert to fraction form
    10,266.30/15,387.30 = 9,221.40/x
  3. Step 3: Cross multiply
    10,266.30x = 15,387.30 × 9,221.40
  4. Step 4: Simplify right side
    10,266.30x = 141,892,448.22
  5. Step 5: Solve for x
    x = 141,892,448.22/10,266.30
  6. Step 6: Final answer
    x = 13,821.19

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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.