Home / 22,987.40-31,719.21-13,296.56

Finding the Fourth Proportional to 22,987.40, 31,719.21 and 13,296.56

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Solution

The fourth proportional to 22,987.40, 31,719.21 and 13,296.56 is: 18,347.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,987.40 : 31,719.21 = 13,296.56 : x
  2. Step 2: Convert to fraction form
    22,987.40/31,719.21 = 13,296.56/x
  3. Step 3: Cross multiply
    22,987.40x = 31,719.21 × 13,296.56
  4. Step 4: Simplify right side
    22,987.40x = 421,756,378.92
  5. Step 5: Solve for x
    x = 421,756,378.92/22,987.40
  6. Step 6: Final answer
    x = 18,347.28

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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.