Home / 28,461.48-39,273.22-15,886.76

Finding the Fourth Proportional to 28,461.48, 39,273.22 and 15,886.76

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Solution

The fourth proportional to 28,461.48, 39,273.22 and 15,886.76 is: 21,921.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,461.48 : 39,273.22 = 15,886.76 : x
  2. Step 2: Convert to fraction form
    28,461.48/39,273.22 = 15,886.76/x
  3. Step 3: Cross multiply
    28,461.48x = 39,273.22 × 15,886.76
  4. Step 4: Simplify right side
    28,461.48x = 623,924,220.57
  5. Step 5: Solve for x
    x = 623,924,220.57/28,461.48
  6. Step 6: Final answer
    x = 21,921.71

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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.