Home / 13,257.28-19,884.88-7,707.08

Finding the Fourth Proportional to 13,257.28, 19,884.88 and 7,707.08

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Solution

The fourth proportional to 13,257.28, 19,884.88 and 7,707.08 is: 11,560.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,257.28 : 19,884.88 = 7,707.08 : x
  2. Step 2: Convert to fraction form
    13,257.28/19,884.88 = 7,707.08/x
  3. Step 3: Cross multiply
    13,257.28x = 19,884.88 × 7,707.08
  4. Step 4: Simplify right side
    13,257.28x = 153,254,420.30
  5. Step 5: Solve for x
    x = 153,254,420.30/13,257.28
  6. Step 6: Final answer
    x = 11,560.02

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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.