Home / 13,279.53-18,326.58-7,312.53

Finding the Fourth Proportional to 13,279.53, 18,326.58 and 7,312.53

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Solution

The fourth proportional to 13,279.53, 18,326.58 and 7,312.53 is: 10,091.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.53 : 18,326.58 = 7,312.53 : x
  2. Step 2: Convert to fraction form
    13,279.53/18,326.58 = 7,312.53/x
  3. Step 3: Cross multiply
    13,279.53x = 18,326.58 × 7,312.53
  4. Step 4: Simplify right side
    13,279.53x = 134,013,666.05
  5. Step 5: Solve for x
    x = 134,013,666.05/13,279.53
  6. Step 6: Final answer
    x = 10,091.75

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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.