Home / 20,729.57-31,070.01-9,612.86

Finding the Fourth Proportional to 20,729.57, 31,070.01 and 9,612.86

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Solution

The fourth proportional to 20,729.57, 31,070.01 and 9,612.86 is: 14,408.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.57 : 31,070.01 = 9,612.86 : x
  2. Step 2: Convert to fraction form
    20,729.57/31,070.01 = 9,612.86/x
  3. Step 3: Cross multiply
    20,729.57x = 31,070.01 × 9,612.86
  4. Step 4: Simplify right side
    20,729.57x = 298,671,656.33
  5. Step 5: Solve for x
    x = 298,671,656.33/20,729.57
  6. Step 6: Final answer
    x = 14,408.00

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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.