Home / 28,408.16-42,590.28-19,617.68

Finding the Fourth Proportional to 28,408.16, 42,590.28 and 19,617.68

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Solution

The fourth proportional to 28,408.16, 42,590.28 and 19,617.68 is: 29,411.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,408.16 : 42,590.28 = 19,617.68 : x
  2. Step 2: Convert to fraction form
    28,408.16/42,590.28 = 19,617.68/x
  3. Step 3: Cross multiply
    28,408.16x = 42,590.28 × 19,617.68
  4. Step 4: Simplify right side
    28,408.16x = 835,522,484.15
  5. Step 5: Solve for x
    x = 835,522,484.15/28,408.16
  6. Step 6: Final answer
    x = 29,411.36

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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.