Home / 15,301.86-21,115.29-8,586.54

Finding the Fourth Proportional to 15,301.86, 21,115.29 and 8,586.54

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Solution

The fourth proportional to 15,301.86, 21,115.29 and 8,586.54 is: 11,848.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,301.86 : 21,115.29 = 8,586.54 : x
  2. Step 2: Convert to fraction form
    15,301.86/21,115.29 = 8,586.54/x
  3. Step 3: Cross multiply
    15,301.86x = 21,115.29 × 8,586.54
  4. Step 4: Simplify right side
    15,301.86x = 181,307,282.20
  5. Step 5: Solve for x
    x = 181,307,282.20/15,301.86
  6. Step 6: Final answer
    x = 11,848.71

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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.