Home / 28,247.53-38,981.63-15,672.28

Finding the Fourth Proportional to 28,247.53, 38,981.63 and 15,672.28

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Solution

The fourth proportional to 28,247.53, 38,981.63 and 15,672.28 is: 21,627.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,247.53 : 38,981.63 = 15,672.28 : x
  2. Step 2: Convert to fraction form
    28,247.53/38,981.63 = 15,672.28/x
  3. Step 3: Cross multiply
    28,247.53x = 38,981.63 × 15,672.28
  4. Step 4: Simplify right side
    28,247.53x = 610,931,020.22
  5. Step 5: Solve for x
    x = 610,931,020.22/28,247.53
  6. Step 6: Final answer
    x = 21,627.77

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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.