Home / 13,283.94-18,331.18-7,315.45

Finding the Fourth Proportional to 13,283.94, 18,331.18 and 7,315.45

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Solution

The fourth proportional to 13,283.94, 18,331.18 and 7,315.45 is: 10,094.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,283.94 : 18,331.18 = 7,315.45 : x
  2. Step 2: Convert to fraction form
    13,283.94/18,331.18 = 7,315.45/x
  3. Step 3: Cross multiply
    13,283.94x = 18,331.18 × 7,315.45
  4. Step 4: Simplify right side
    13,283.94x = 134,100,830.73
  5. Step 5: Solve for x
    x = 134,100,830.73/13,283.94
  6. Step 6: Final answer
    x = 10,094.96

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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.