Home / 13,240.46-18,271.96-7,272.25

Finding the Fourth Proportional to 13,240.46, 18,271.96 and 7,272.25

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Solution

The fourth proportional to 13,240.46, 18,271.96 and 7,272.25 is: 10,035.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.46 : 18,271.96 = 7,272.25 : x
  2. Step 2: Convert to fraction form
    13,240.46/18,271.96 = 7,272.25/x
  3. Step 3: Cross multiply
    13,240.46x = 18,271.96 × 7,272.25
  4. Step 4: Simplify right side
    13,240.46x = 132,878,261.11
  5. Step 5: Solve for x
    x = 132,878,261.11/13,240.46
  6. Step 6: Final answer
    x = 10,035.77

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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.