Home / 15,490.65-21,370.23-9,199.38

Finding the Fourth Proportional to 15,490.65, 21,370.23 and 9,199.38

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Solution

The fourth proportional to 15,490.65, 21,370.23 and 9,199.38 is: 12,691.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490.65 : 21,370.23 = 9,199.38 : x
  2. Step 2: Convert to fraction form
    15,490.65/21,370.23 = 9,199.38/x
  3. Step 3: Cross multiply
    15,490.65x = 21,370.23 × 9,199.38
  4. Step 4: Simplify right side
    15,490.65x = 196,592,866.46
  5. Step 5: Solve for x
    x = 196,592,866.46/15,490.65
  6. Step 6: Final answer
    x = 12,691.07

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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.