Home / 13,210.79-18,236.70-9,247.46

Finding the Fourth Proportional to 13,210.79, 18,236.70 and 9,247.46

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Solution

The fourth proportional to 13,210.79, 18,236.70 and 9,247.46 is: 12,765.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.79 : 18,236.70 = 9,247.46 : x
  2. Step 2: Convert to fraction form
    13,210.79/18,236.70 = 9,247.46/x
  3. Step 3: Cross multiply
    13,210.79x = 18,236.70 × 9,247.46
  4. Step 4: Simplify right side
    13,210.79x = 168,643,062.60
  5. Step 5: Solve for x
    x = 168,643,062.60/13,210.79
  6. Step 6: Final answer
    x = 12,765.56

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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.