Home / 13,349.52-18,421.80-7,760.08

Finding the Fourth Proportional to 13,349.52, 18,421.80 and 7,760.08

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Solution

The fourth proportional to 13,349.52, 18,421.80 and 7,760.08 is: 10,708.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.52 : 18,421.80 = 7,760.08 : x
  2. Step 2: Convert to fraction form
    13,349.52/18,421.80 = 7,760.08/x
  3. Step 3: Cross multiply
    13,349.52x = 18,421.80 × 7,760.08
  4. Step 4: Simplify right side
    13,349.52x = 142,954,641.74
  5. Step 5: Solve for x
    x = 142,954,641.74/13,349.52
  6. Step 6: Final answer
    x = 10,708.60

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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.