Home / 13,302.78-18,345.02-8,757.32

Finding the Fourth Proportional to 13,302.78, 18,345.02 and 8,757.32

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Solution

The fourth proportional to 13,302.78, 18,345.02 and 8,757.32 is: 12,076.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,302.78 : 18,345.02 = 8,757.32 : x
  2. Step 2: Convert to fraction form
    13,302.78/18,345.02 = 8,757.32/x
  3. Step 3: Cross multiply
    13,302.78x = 18,345.02 × 8,757.32
  4. Step 4: Simplify right side
    13,302.78x = 160,653,210.55
  5. Step 5: Solve for x
    x = 160,653,210.55/13,302.78
  6. Step 6: Final answer
    x = 12,076.66

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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.