Home / 28,123.10-42,165.45-10,590.30

Finding the Fourth Proportional to 28,123.10, 42,165.45 and 10,590.30

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Solution

The fourth proportional to 28,123.10, 42,165.45 and 10,590.30 is: 15,878.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,123.10 : 42,165.45 = 10,590.30 : x
  2. Step 2: Convert to fraction form
    28,123.10/42,165.45 = 10,590.30/x
  3. Step 3: Cross multiply
    28,123.10x = 42,165.45 × 10,590.30
  4. Step 4: Simplify right side
    28,123.10x = 446,544,765.14
  5. Step 5: Solve for x
    x = 446,544,765.14/28,123.10
  6. Step 6: Final answer
    x = 15,878.22

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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.