Home / 10,661.90-14,720.67-6,894.18

Finding the Fourth Proportional to 10,661.90, 14,720.67 and 6,894.18

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Solution

The fourth proportional to 10,661.90, 14,720.67 and 6,894.18 is: 9,518.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,661.90 : 14,720.67 = 6,894.18 : x
  2. Step 2: Convert to fraction form
    10,661.90/14,720.67 = 6,894.18/x
  3. Step 3: Cross multiply
    10,661.90x = 14,720.67 × 6,894.18
  4. Step 4: Simplify right side
    10,661.90x = 101,486,948.70
  5. Step 5: Solve for x
    x = 101,486,948.70/10,661.90
  6. Step 6: Final answer
    x = 9,518.66

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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.