Home / 13,166.38-19,580.27-12,751.08

Finding the Fourth Proportional to 13,166.38, 19,580.27 and 12,751.08

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Solution

The fourth proportional to 13,166.38, 19,580.27 and 12,751.08 is: 18,962.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,166.38 : 19,580.27 = 12,751.08 : x
  2. Step 2: Convert to fraction form
    13,166.38/19,580.27 = 12,751.08/x
  3. Step 3: Cross multiply
    13,166.38x = 19,580.27 × 12,751.08
  4. Step 4: Simplify right side
    13,166.38x = 249,669,589.19
  5. Step 5: Solve for x
    x = 249,669,589.19/13,166.38
  6. Step 6: Final answer
    x = 18,962.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.