Home / 28,007.84-38,649.92-15,432.48

Finding the Fourth Proportional to 28,007.84, 38,649.92 and 15,432.48

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Solution

The fourth proportional to 28,007.84, 38,649.92 and 15,432.48 is: 21,296.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,007.84 : 38,649.92 = 15,432.48 : x
  2. Step 2: Convert to fraction form
    28,007.84/38,649.92 = 15,432.48/x
  3. Step 3: Cross multiply
    28,007.84x = 38,649.92 × 15,432.48
  4. Step 4: Simplify right side
    28,007.84x = 596,464,117.40
  5. Step 5: Solve for x
    x = 596,464,117.40/28,007.84
  6. Step 6: Final answer
    x = 21,296.33

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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.