Home / 28,444.21-42,631.72-20,126.63

Finding the Fourth Proportional to 28,444.21, 42,631.72 and 20,126.63

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Solution

The fourth proportional to 28,444.21, 42,631.72 and 20,126.63 is: 30,165.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,444.21 : 42,631.72 = 20,126.63 : x
  2. Step 2: Convert to fraction form
    28,444.21/42,631.72 = 20,126.63/x
  3. Step 3: Cross multiply
    28,444.21x = 42,631.72 × 20,126.63
  4. Step 4: Simplify right side
    28,444.21x = 858,032,854.70
  5. Step 5: Solve for x
    x = 858,032,854.70/28,444.21
  6. Step 6: Final answer
    x = 30,165.47

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1.5x scale

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.