Home / 10,122.61-13,969.25-5,585.45

Finding the Fourth Proportional to 10,122.61, 13,969.25 and 5,585.45

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Solution

The fourth proportional to 10,122.61, 13,969.25 and 5,585.45 is: 7,707.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,122.61 : 13,969.25 = 5,585.45 : x
  2. Step 2: Convert to fraction form
    10,122.61/13,969.25 = 5,585.45/x
  3. Step 3: Cross multiply
    10,122.61x = 13,969.25 × 5,585.45
  4. Step 4: Simplify right side
    10,122.61x = 78,024,512.49
  5. Step 5: Solve for x
    x = 78,024,512.49/10,122.61
  6. Step 6: Final answer
    x = 7,707.95

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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.