Home / 28,549.85-39,397.52-15,803.51

Finding the Fourth Proportional to 28,549.85, 39,397.52 and 15,803.51

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Solution

The fourth proportional to 28,549.85, 39,397.52 and 15,803.51 is: 21,808.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,549.85 : 39,397.52 = 15,803.51 : x
  2. Step 2: Convert to fraction form
    28,549.85/39,397.52 = 15,803.51/x
  3. Step 3: Cross multiply
    28,549.85x = 39,397.52 × 15,803.51
  4. Step 4: Simplify right side
    28,549.85x = 622,619,022.28
  5. Step 5: Solve for x
    x = 622,619,022.28/28,549.85
  6. Step 6: Final answer
    x = 21,808.14

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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.