Home / 28,083.60-38,755.74-15,508.32

Finding the Fourth Proportional to 28,083.60, 38,755.74 and 15,508.32

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Solution

The fourth proportional to 28,083.60, 38,755.74 and 15,508.32 is: 21,401.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,083.60 : 38,755.74 = 15,508.32 : x
  2. Step 2: Convert to fraction form
    28,083.60/38,755.74 = 15,508.32/x
  3. Step 3: Cross multiply
    28,083.60x = 38,755.74 × 15,508.32
  4. Step 4: Simplify right side
    28,083.60x = 601,036,417.76
  5. Step 5: Solve for x
    x = 601,036,417.76/28,083.60
  6. Step 6: Final answer
    x = 21,401.69

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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.