Home / 13,278.69-18,325.12-7,310.91

Finding the Fourth Proportional to 13,278.69, 18,325.12 and 7,310.91

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Solution

The fourth proportional to 13,278.69, 18,325.12 and 7,310.91 is: 10,089.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.69 : 18,325.12 = 7,310.91 : x
  2. Step 2: Convert to fraction form
    13,278.69/18,325.12 = 7,310.91/x
  3. Step 3: Cross multiply
    13,278.69x = 18,325.12 × 7,310.91
  4. Step 4: Simplify right side
    13,278.69x = 133,973,303.06
  5. Step 5: Solve for x
    x = 133,973,303.06/13,278.69
  6. Step 6: Final answer
    x = 10,089.35

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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.