Home / 13,512.12-18,655.28-9,270.28

Finding the Fourth Proportional to 13,512.12, 18,655.28 and 9,270.28

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Solution

The fourth proportional to 13,512.12, 18,655.28 and 9,270.28 is: 12,798.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,512.12 : 18,655.28 = 9,270.28 : x
  2. Step 2: Convert to fraction form
    13,512.12/18,655.28 = 9,270.28/x
  3. Step 3: Cross multiply
    13,512.12x = 18,655.28 × 9,270.28
  4. Step 4: Simplify right side
    13,512.12x = 172,939,669.08
  5. Step 5: Solve for x
    x = 172,939,669.08/13,512.12
  6. Step 6: Final answer
    x = 12,798.86

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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.