Home / 12,528.59-17,285.16-7,147.16

Finding the Fourth Proportional to 12,528.59, 17,285.16 and 7,147.16

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Solution

The fourth proportional to 12,528.59, 17,285.16 and 7,147.16 is: 9,860.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528.59 : 17,285.16 = 7,147.16 : x
  2. Step 2: Convert to fraction form
    12,528.59/17,285.16 = 7,147.16/x
  3. Step 3: Cross multiply
    12,528.59x = 17,285.16 × 7,147.16
  4. Step 4: Simplify right side
    12,528.59x = 123,539,804.15
  5. Step 5: Solve for x
    x = 123,539,804.15/12,528.59
  6. Step 6: Final answer
    x = 9,860.63

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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.