Home / 38,421.88-57,639.80-18,700.48

Finding the Fourth Proportional to 38,421.88, 57,639.80 and 18,700.48

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Solution

The fourth proportional to 38,421.88, 57,639.80 and 18,700.48 is: 28,054.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,421.88 : 57,639.80 = 18,700.48 : x
  2. Step 2: Convert to fraction form
    38,421.88/57,639.80 = 18,700.48/x
  3. Step 3: Cross multiply
    38,421.88x = 57,639.80 × 18,700.48
  4. Step 4: Simplify right side
    38,421.88x = 1,077,891,927.10
  5. Step 5: Solve for x
    x = 1,077,891,927.10/38,421.88
  6. Step 6: Final answer
    x = 28,054.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.