Home / 20,330.10-30,495.15-13,354.20

Finding the Fourth Proportional to 20,330.10, 30,495.15 and 13,354.20

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Solution

The fourth proportional to 20,330.10, 30,495.15 and 13,354.20 is: 20,031.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,330.10 : 30,495.15 = 13,354.20 : x
  2. Step 2: Convert to fraction form
    20,330.10/30,495.15 = 13,354.20/x
  3. Step 3: Cross multiply
    20,330.10x = 30,495.15 × 13,354.20
  4. Step 4: Simplify right side
    20,330.10x = 407,238,332.13
  5. Step 5: Solve for x
    x = 407,238,332.13/20,330.10
  6. Step 6: Final answer
    x = 20,031.30

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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.