Home / 18,352.70-25,318.02-12,386.30

Finding the Fourth Proportional to 18,352.70, 25,318.02 and 12,386.30

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Solution

The fourth proportional to 18,352.70, 25,318.02 and 12,386.30 is: 17,087.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,352.70 : 25,318.02 = 12,386.30 : x
  2. Step 2: Convert to fraction form
    18,352.70/25,318.02 = 12,386.30/x
  3. Step 3: Cross multiply
    18,352.70x = 25,318.02 × 12,386.30
  4. Step 4: Simplify right side
    18,352.70x = 313,596,591.13
  5. Step 5: Solve for x
    x = 313,596,591.13/18,352.70
  6. Step 6: Final answer
    x = 17,087.22

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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.