Home / 15,379.55-21,225.80-8,666.48

Finding the Fourth Proportional to 15,379.55, 21,225.80 and 8,666.48

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Solution

The fourth proportional to 15,379.55, 21,225.80 and 8,666.48 is: 11,960.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,379.55 : 21,225.80 = 8,666.48 : x
  2. Step 2: Convert to fraction form
    15,379.55/21,225.80 = 8,666.48/x
  3. Step 3: Cross multiply
    15,379.55x = 21,225.80 × 8,666.48
  4. Step 4: Simplify right side
    15,379.55x = 183,952,971.18
  5. Step 5: Solve for x
    x = 183,952,971.18/15,379.55
  6. Step 6: Final answer
    x = 11,960.88

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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.