Home / 20,368.03-28,110.47-11,870.55

Finding the Fourth Proportional to 20,368.03, 28,110.47 and 11,870.55

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Solution

The fourth proportional to 20,368.03, 28,110.47 and 11,870.55 is: 16,382.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,368.03 : 28,110.47 = 11,870.55 : x
  2. Step 2: Convert to fraction form
    20,368.03/28,110.47 = 11,870.55/x
  3. Step 3: Cross multiply
    20,368.03x = 28,110.47 × 11,870.55
  4. Step 4: Simplify right side
    20,368.03x = 333,686,713.69
  5. Step 5: Solve for x
    x = 333,686,713.69/20,368.03
  6. Step 6: Final answer
    x = 16,382.86

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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.