Home / 12,319.60-17,001.60-7,015.54

Finding the Fourth Proportional to 12,319.60, 17,001.60 and 7,015.54

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Solution

The fourth proportional to 12,319.60, 17,001.60 and 7,015.54 is: 9,681.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,319.60 : 17,001.60 = 7,015.54 : x
  2. Step 2: Convert to fraction form
    12,319.60/17,001.60 = 7,015.54/x
  3. Step 3: Cross multiply
    12,319.60x = 17,001.60 × 7,015.54
  4. Step 4: Simplify right side
    12,319.60x = 119,275,404.86
  5. Step 5: Solve for x
    x = 119,275,404.86/12,319.60
  6. Step 6: Final answer
    x = 9,681.76

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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.