Home / 13,319.06-18,380.90-7,655.64

Finding the Fourth Proportional to 13,319.06, 18,380.90 and 7,655.64

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Solution

The fourth proportional to 13,319.06, 18,380.90 and 7,655.64 is: 10,565.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.06 : 18,380.90 = 7,655.64 : x
  2. Step 2: Convert to fraction form
    13,319.06/18,380.90 = 7,655.64/x
  3. Step 3: Cross multiply
    13,319.06x = 18,380.90 × 7,655.64
  4. Step 4: Simplify right side
    13,319.06x = 140,717,515.00
  5. Step 5: Solve for x
    x = 140,717,515.00/13,319.06
  6. Step 6: Final answer
    x = 10,565.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.