Home / 30,647.16-42,312.65-20,452.73

Finding the Fourth Proportional to 30,647.16, 42,312.65 and 20,452.73

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Solution

The fourth proportional to 30,647.16, 42,312.65 and 20,452.73 is: 28,237.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,647.16 : 42,312.65 = 20,452.73 : x
  2. Step 2: Convert to fraction form
    30,647.16/42,312.65 = 20,452.73/x
  3. Step 3: Cross multiply
    30,647.16x = 42,312.65 × 20,452.73
  4. Step 4: Simplify right side
    30,647.16x = 865,408,892.21
  5. Step 5: Solve for x
    x = 865,408,892.21/30,647.16
  6. Step 6: Final answer
    x = 28,237.82

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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.