Home / 15,458.75-21,332.48-8,385.02

Finding the Fourth Proportional to 15,458.75, 21,332.48 and 8,385.02

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Solution

The fourth proportional to 15,458.75, 21,332.48 and 8,385.02 is: 11,571.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,458.75 : 21,332.48 = 8,385.02 : x
  2. Step 2: Convert to fraction form
    15,458.75/21,332.48 = 8,385.02/x
  3. Step 3: Cross multiply
    15,458.75x = 21,332.48 × 8,385.02
  4. Step 4: Simplify right side
    15,458.75x = 178,873,185.75
  5. Step 5: Solve for x
    x = 178,873,185.75/15,458.75
  6. Step 6: Final answer
    x = 11,571.00

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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.