Home / 13,245.69-18,278.61-7,276.98

Finding the Fourth Proportional to 13,245.69, 18,278.61 and 7,276.98

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Solution

The fourth proportional to 13,245.69, 18,278.61 and 7,276.98 is: 10,041.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.69 : 18,278.61 = 7,276.98 : x
  2. Step 2: Convert to fraction form
    13,245.69/18,278.61 = 7,276.98/x
  3. Step 3: Cross multiply
    13,245.69x = 18,278.61 × 7,276.98
  4. Step 4: Simplify right side
    13,245.69x = 133,013,079.40
  5. Step 5: Solve for x
    x = 133,013,079.40/13,245.69
  6. Step 6: Final answer
    x = 10,041.99

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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.