Home / 18,315.24-25,275.24-9,931.92

Finding the Fourth Proportional to 18,315.24, 25,275.24 and 9,931.92

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Solution

The fourth proportional to 18,315.24, 25,275.24 and 9,931.92 is: 13,706.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.24 : 25,275.24 = 9,931.92 : x
  2. Step 2: Convert to fraction form
    18,315.24/25,275.24 = 9,931.92/x
  3. Step 3: Cross multiply
    18,315.24x = 25,275.24 × 9,931.92
  4. Step 4: Simplify right side
    18,315.24x = 251,031,661.66
  5. Step 5: Solve for x
    x = 251,031,661.66/18,315.24
  6. Step 6: Final answer
    x = 13,706.16

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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.