Home / 13,315.92-18,376.07-7,347.80

Finding the Fourth Proportional to 13,315.92, 18,376.07 and 7,347.80

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Solution

The fourth proportional to 13,315.92, 18,376.07 and 7,347.80 is: 10,140.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.92 : 18,376.07 = 7,347.80 : x
  2. Step 2: Convert to fraction form
    13,315.92/18,376.07 = 7,347.80/x
  3. Step 3: Cross multiply
    13,315.92x = 18,376.07 × 7,347.80
  4. Step 4: Simplify right side
    13,315.92x = 135,023,622.84
  5. Step 5: Solve for x
    x = 135,023,622.84/13,315.92
  6. Step 6: Final answer
    x = 10,140.02

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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.