Home / 10,219.10-15,308.40-9,001.40

Finding the Fourth Proportional to 10,219.10, 15,308.40 and 9,001.40

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Solution

The fourth proportional to 10,219.10, 15,308.40 and 9,001.40 is: 13,484.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,219.10 : 15,308.40 = 9,001.40 : x
  2. Step 2: Convert to fraction form
    10,219.10/15,308.40 = 9,001.40/x
  3. Step 3: Cross multiply
    10,219.10x = 15,308.40 × 9,001.40
  4. Step 4: Simplify right side
    10,219.10x = 137,797,031.76
  5. Step 5: Solve for x
    x = 137,797,031.76/10,219.10
  6. Step 6: Final answer
    x = 13,484.26

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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.