Home / 10,205.18-14,083.08-6,430.78

Finding the Fourth Proportional to 10,205.18, 14,083.08 and 6,430.78

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Solution

The fourth proportional to 10,205.18, 14,083.08 and 6,430.78 is: 8,874.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,205.18 : 14,083.08 = 6,430.78 : x
  2. Step 2: Convert to fraction form
    10,205.18/14,083.08 = 6,430.78/x
  3. Step 3: Cross multiply
    10,205.18x = 14,083.08 × 6,430.78
  4. Step 4: Simplify right side
    10,205.18x = 90,565,189.20
  5. Step 5: Solve for x
    x = 90,565,189.20/10,205.18
  6. Step 6: Final answer
    x = 8,874.43

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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.