Home / 28,256.01-38,993.45-15,680.76

Finding the Fourth Proportional to 28,256.01, 38,993.45 and 15,680.76

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Solution

The fourth proportional to 28,256.01, 38,993.45 and 15,680.76 is: 21,639.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,256.01 : 38,993.45 = 15,680.76 : x
  2. Step 2: Convert to fraction form
    28,256.01/38,993.45 = 15,680.76/x
  3. Step 3: Cross multiply
    28,256.01x = 38,993.45 × 15,680.76
  4. Step 4: Simplify right side
    28,256.01x = 611,446,931.02
  5. Step 5: Solve for x
    x = 611,446,931.02/28,256.01
  6. Step 6: Final answer
    x = 21,639.54

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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.