Home / 13,245.12-18,280.08-7,655.04

Finding the Fourth Proportional to 13,245.12, 18,280.08 and 7,655.04

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Solution

The fourth proportional to 13,245.12, 18,280.08 and 7,655.04 is: 10,565.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.12 : 18,280.08 = 7,655.04 : x
  2. Step 2: Convert to fraction form
    13,245.12/18,280.08 = 7,655.04/x
  3. Step 3: Cross multiply
    13,245.12x = 18,280.08 × 7,655.04
  4. Step 4: Simplify right side
    13,245.12x = 139,934,743.60
  5. Step 5: Solve for x
    x = 139,934,743.60/13,245.12
  6. Step 6: Final answer
    x = 10,565.00

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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.