Home / 20,344.18-28,073.01-11,390.98

Finding the Fourth Proportional to 20,344.18, 28,073.01 and 11,390.98

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Solution

The fourth proportional to 20,344.18, 28,073.01 and 11,390.98 is: 15,718.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,344.18 : 28,073.01 = 11,390.98 : x
  2. Step 2: Convert to fraction form
    20,344.18/28,073.01 = 11,390.98/x
  3. Step 3: Cross multiply
    20,344.18x = 28,073.01 × 11,390.98
  4. Step 4: Simplify right side
    20,344.18x = 319,779,095.45
  5. Step 5: Solve for x
    x = 319,779,095.45/20,344.18
  6. Step 6: Final answer
    x = 15,718.46

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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.