Home / 10,020.69-13,821.12-6,480.18

Finding the Fourth Proportional to 10,020.69, 13,821.12 and 6,480.18

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Solution

The fourth proportional to 10,020.69, 13,821.12 and 6,480.18 is: 8,937.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,020.69 : 13,821.12 = 6,480.18 : x
  2. Step 2: Convert to fraction form
    10,020.69/13,821.12 = 6,480.18/x
  3. Step 3: Cross multiply
    10,020.69x = 13,821.12 × 6,480.18
  4. Step 4: Simplify right side
    10,020.69x = 89,563,345.40
  5. Step 5: Solve for x
    x = 89,563,345.40/10,020.69
  6. Step 6: Final answer
    x = 8,937.84

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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.