Home / 15,782.86-23,672.67-9,921.70

Finding the Fourth Proportional to 15,782.86, 23,672.67 and 9,921.70

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Solution

The fourth proportional to 15,782.86, 23,672.67 and 9,921.70 is: 14,881.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,782.86 : 23,672.67 = 9,921.70 : x
  2. Step 2: Convert to fraction form
    15,782.86/23,672.67 = 9,921.70/x
  3. Step 3: Cross multiply
    15,782.86x = 23,672.67 × 9,921.70
  4. Step 4: Simplify right side
    15,782.86x = 234,873,129.94
  5. Step 5: Solve for x
    x = 234,873,129.94/15,782.86
  6. Step 6: Final answer
    x = 14,881.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.