Home / 20,322.95-28,045.80-11,370.45

Finding the Fourth Proportional to 20,322.95, 28,045.80 and 11,370.45

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Solution

The fourth proportional to 20,322.95, 28,045.80 and 11,370.45 is: 15,691.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.95 : 28,045.80 = 11,370.45 : x
  2. Step 2: Convert to fraction form
    20,322.95/28,045.80 = 11,370.45/x
  3. Step 3: Cross multiply
    20,322.95x = 28,045.80 × 11,370.45
  4. Step 4: Simplify right side
    20,322.95x = 318,893,309.76
  5. Step 5: Solve for x
    x = 318,893,309.76/20,322.95
  6. Step 6: Final answer
    x = 15,691.29

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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.