Home / 28,030.12-38,689.08-18,951.32

Finding the Fourth Proportional to 28,030.12, 38,689.08 and 18,951.32

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Solution

The fourth proportional to 28,030.12, 38,689.08 and 18,951.32 is: 26,157.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,030.12 : 38,689.08 = 18,951.32 : x
  2. Step 2: Convert to fraction form
    28,030.12/38,689.08 = 18,951.32/x
  3. Step 3: Cross multiply
    28,030.12x = 38,689.08 × 18,951.32
  4. Step 4: Simplify right side
    28,030.12x = 733,209,135.59
  5. Step 5: Solve for x
    x = 733,209,135.59/28,030.12
  6. Step 6: Final answer
    x = 26,157.90

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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.