Home / 15,574.72-21,499.14-9,287.56

Finding the Fourth Proportional to 15,574.72, 21,499.14 and 9,287.56

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Solution

The fourth proportional to 15,574.72, 21,499.14 and 9,287.56 is: 12,820.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,574.72 : 21,499.14 = 9,287.56 : x
  2. Step 2: Convert to fraction form
    15,574.72/21,499.14 = 9,287.56/x
  3. Step 3: Cross multiply
    15,574.72x = 21,499.14 × 9,287.56
  4. Step 4: Simplify right side
    15,574.72x = 199,674,552.70
  5. Step 5: Solve for x
    x = 199,674,552.70/15,574.72
  6. Step 6: Final answer
    x = 12,820.43

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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.