Home / 18,315.41-25,275.28-9,931.91

Finding the Fourth Proportional to 18,315.41, 25,275.28 and 9,931.91

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Solution

The fourth proportional to 18,315.41, 25,275.28 and 9,931.91 is: 13,706.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.41 : 25,275.28 = 9,931.91 : x
  2. Step 2: Convert to fraction form
    18,315.41/25,275.28 = 9,931.91/x
  3. Step 3: Cross multiply
    18,315.41x = 25,275.28 × 9,931.91
  4. Step 4: Simplify right side
    18,315.41x = 251,031,806.18
  5. Step 5: Solve for x
    x = 251,031,806.18/18,315.41
  6. Step 6: Final answer
    x = 13,706.04

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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.