Home / 13,315.40-18,373.86-7,346.76

Finding the Fourth Proportional to 13,315.40, 18,373.86 and 7,346.76

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Solution

The fourth proportional to 13,315.40, 18,373.86 and 7,346.76 is: 10,137.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.40 : 18,373.86 = 7,346.76 : x
  2. Step 2: Convert to fraction form
    13,315.40/18,373.86 = 7,346.76/x
  3. Step 3: Cross multiply
    13,315.40x = 18,373.86 × 7,346.76
  4. Step 4: Simplify right side
    13,315.40x = 134,988,339.69
  5. Step 5: Solve for x
    x = 134,988,339.69/13,315.40
  6. Step 6: Final answer
    x = 10,137.76

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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.