Home / 13,210.83-18,255.11-9,619.55

Finding the Fourth Proportional to 13,210.83, 18,255.11 and 9,619.55

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Solution

The fourth proportional to 13,210.83, 18,255.11 and 9,619.55 is: 13,292.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.83 : 18,255.11 = 9,619.55 : x
  2. Step 2: Convert to fraction form
    13,210.83/18,255.11 = 9,619.55/x
  3. Step 3: Cross multiply
    13,210.83x = 18,255.11 × 9,619.55
  4. Step 4: Simplify right side
    13,210.83x = 175,605,943.40
  5. Step 5: Solve for x
    x = 175,605,943.40/13,210.83
  6. Step 6: Final answer
    x = 13,292.57

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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.