Home / 13,271.29-18,315.04-7,302.90

Finding the Fourth Proportional to 13,271.29, 18,315.04 and 7,302.90

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Solution

The fourth proportional to 13,271.29, 18,315.04 and 7,302.90 is: 10,078.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,271.29 : 18,315.04 = 7,302.90 : x
  2. Step 2: Convert to fraction form
    13,271.29/18,315.04 = 7,302.90/x
  3. Step 3: Cross multiply
    13,271.29x = 18,315.04 × 7,302.90
  4. Step 4: Simplify right side
    13,271.29x = 133,752,887.36
  5. Step 5: Solve for x
    x = 133,752,887.36/13,271.29
  6. Step 6: Final answer
    x = 10,078.37

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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.