Home / 28,030.64-42,030.45-11,146.55

Finding the Fourth Proportional to 28,030.64, 42,030.45 and 11,146.55

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Solution

The fourth proportional to 28,030.64, 42,030.45 and 11,146.55 is: 16,713.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,030.64 : 42,030.45 = 11,146.55 : x
  2. Step 2: Convert to fraction form
    28,030.64/42,030.45 = 11,146.55/x
  3. Step 3: Cross multiply
    28,030.64x = 42,030.45 × 11,146.55
  4. Step 4: Simplify right side
    28,030.64x = 468,494,302.30
  5. Step 5: Solve for x
    x = 468,494,302.30/28,030.64
  6. Step 6: Final answer
    x = 16,713.65

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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.