Home / 15,622.96-21,548.80-11,151.76

Finding the Fourth Proportional to 15,622.96, 21,548.80 and 11,151.76

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Solution

The fourth proportional to 15,622.96, 21,548.80 and 11,151.76 is: 15,381.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,622.96 : 21,548.80 = 11,151.76 : x
  2. Step 2: Convert to fraction form
    15,622.96/21,548.80 = 11,151.76/x
  3. Step 3: Cross multiply
    15,622.96x = 21,548.80 × 11,151.76
  4. Step 4: Simplify right side
    15,622.96x = 240,307,045.89
  5. Step 5: Solve for x
    x = 240,307,045.89/15,622.96
  6. Step 6: Final answer
    x = 15,381.66

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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.