Home / 15,285.86-21,098.24-9,320.82

Finding the Fourth Proportional to 15,285.86, 21,098.24 and 9,320.82

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Solution

The fourth proportional to 15,285.86, 21,098.24 and 9,320.82 is: 12,865.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,285.86 : 21,098.24 = 9,320.82 : x
  2. Step 2: Convert to fraction form
    15,285.86/21,098.24 = 9,320.82/x
  3. Step 3: Cross multiply
    15,285.86x = 21,098.24 × 9,320.82
  4. Step 4: Simplify right side
    15,285.86x = 196,652,897.36
  5. Step 5: Solve for x
    x = 196,652,897.36/15,285.86
  6. Step 6: Final answer
    x = 12,865.02

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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.