Home / 28,321.20-42,488.28-15,835.05

Finding the Fourth Proportional to 28,321.20, 42,488.28 and 15,835.05

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Solution

The fourth proportional to 28,321.20, 42,488.28 and 15,835.05 is: 23,756.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,321.20 : 42,488.28 = 15,835.05 : x
  2. Step 2: Convert to fraction form
    28,321.20/42,488.28 = 15,835.05/x
  3. Step 3: Cross multiply
    28,321.20x = 42,488.28 × 15,835.05
  4. Step 4: Simplify right side
    28,321.20x = 672,804,038.21
  5. Step 5: Solve for x
    x = 672,804,038.21/28,321.20
  6. Step 6: Final answer
    x = 23,756.20

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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.