Home / 28,437.12-39,242.88-15,864

Finding the Fourth Proportional to 28,437.12, 39,242.88 and 15,864

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Solution

The fourth proportional to 28,437.12, 39,242.88 and 15,864 is: 21,892.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,437.12 : 39,242.88 = 15,864 : x
  2. Step 2: Convert to fraction form
    28,437.12/39,242.88 = 15,864/x
  3. Step 3: Cross multiply
    28,437.12x = 39,242.88 × 15,864
  4. Step 4: Simplify right side
    28,437.12x = 622,549,048.32
  5. Step 5: Solve for x
    x = 622,549,048.32/28,437.12
  6. Step 6: Final answer
    x = 21,892.13

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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.