Home / 28,246.72-38,980.84-15,499.10

Finding the Fourth Proportional to 28,246.72, 38,980.84 and 15,499.10

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Solution

The fourth proportional to 28,246.72, 38,980.84 and 15,499.10 is: 21,388.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,246.72 : 38,980.84 = 15,499.10 : x
  2. Step 2: Convert to fraction form
    28,246.72/38,980.84 = 15,499.10/x
  3. Step 3: Cross multiply
    28,246.72x = 38,980.84 × 15,499.10
  4. Step 4: Simplify right side
    28,246.72x = 604,167,937.24
  5. Step 5: Solve for x
    x = 604,167,937.24/28,246.72
  6. Step 6: Final answer
    x = 21,388.96

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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.