Home / 28,508.49-39,340.71-15,760.89

Finding the Fourth Proportional to 28,508.49, 39,340.71 and 15,760.89

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Solution

The fourth proportional to 28,508.49, 39,340.71 and 15,760.89 is: 21,749.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,508.49 : 39,340.71 = 15,760.89 : x
  2. Step 2: Convert to fraction form
    28,508.49/39,340.71 = 15,760.89/x
  3. Step 3: Cross multiply
    28,508.49x = 39,340.71 × 15,760.89
  4. Step 4: Simplify right side
    28,508.49x = 620,044,602.83
  5. Step 5: Solve for x
    x = 620,044,602.83/28,508.49
  6. Step 6: Final answer
    x = 21,749.47

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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.