Home / 28,296.76-39,045.36-15,721.52

Finding the Fourth Proportional to 28,296.76, 39,045.36 and 15,721.52

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Solution

The fourth proportional to 28,296.76, 39,045.36 and 15,721.52 is: 21,693.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,296.76 : 39,045.36 = 15,721.52 : x
  2. Step 2: Convert to fraction form
    28,296.76/39,045.36 = 15,721.52/x
  3. Step 3: Cross multiply
    28,296.76x = 39,045.36 × 15,721.52
  4. Step 4: Simplify right side
    28,296.76x = 613,852,408.15
  5. Step 5: Solve for x
    x = 613,852,408.15/28,296.76
  6. Step 6: Final answer
    x = 21,693.38

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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.