Home / 28,328.12-39,093-15,753.68

Finding the Fourth Proportional to 28,328.12, 39,093 and 15,753.68

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Solution

The fourth proportional to 28,328.12, 39,093 and 15,753.68 is: 21,740.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,328.12 : 39,093 = 15,753.68 : x
  2. Step 2: Convert to fraction form
    28,328.12/39,093 = 15,753.68/x
  3. Step 3: Cross multiply
    28,328.12x = 39,093 × 15,753.68
  4. Step 4: Simplify right side
    28,328.12x = 615,858,612.24
  5. Step 5: Solve for x
    x = 615,858,612.24/28,328.12
  6. Step 6: Final answer
    x = 21,740.19

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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.