Home / 15,763.72-21,785.28-12,926.68

Finding the Fourth Proportional to 15,763.72, 21,785.28 and 12,926.68

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Solution

The fourth proportional to 15,763.72, 21,785.28 and 12,926.68 is: 17,864.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,763.72 : 21,785.28 = 12,926.68 : x
  2. Step 2: Convert to fraction form
    15,763.72/21,785.28 = 12,926.68/x
  3. Step 3: Cross multiply
    15,763.72x = 21,785.28 × 12,926.68
  4. Step 4: Simplify right side
    15,763.72x = 281,611,343.27
  5. Step 5: Solve for x
    x = 281,611,343.27/15,763.72
  6. Step 6: Final answer
    x = 17,864.52

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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.