Home / 15,478.08-21,359.35-8,764.37

Finding the Fourth Proportional to 15,478.08, 21,359.35 and 8,764.37

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Solution

The fourth proportional to 15,478.08, 21,359.35 and 8,764.37 is: 12,094.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,478.08 : 21,359.35 = 8,764.37 : x
  2. Step 2: Convert to fraction form
    15,478.08/21,359.35 = 8,764.37/x
  3. Step 3: Cross multiply
    15,478.08x = 21,359.35 × 8,764.37
  4. Step 4: Simplify right side
    15,478.08x = 187,201,095.74
  5. Step 5: Solve for x
    x = 187,201,095.74/15,478.08
  6. Step 6: Final answer
    x = 12,094.59

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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.