Home / 13,590.28-20,352.58-7,729.12

Finding the Fourth Proportional to 13,590.28, 20,352.58 and 7,729.12

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Solution

The fourth proportional to 13,590.28, 20,352.58 and 7,729.12 is: 11,575.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590.28 : 20,352.58 = 7,729.12 : x
  2. Step 2: Convert to fraction form
    13,590.28/20,352.58 = 7,729.12/x
  3. Step 3: Cross multiply
    13,590.28x = 20,352.58 × 7,729.12
  4. Step 4: Simplify right side
    13,590.28x = 157,307,533.13
  5. Step 5: Solve for x
    x = 157,307,533.13/13,590.28
  6. Step 6: Final answer
    x = 11,575.00

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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.