Home / 13,152.16-18,138.90-11,281.06

Finding the Fourth Proportional to 13,152.16, 18,138.90 and 11,281.06

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Solution

The fourth proportional to 13,152.16, 18,138.90 and 11,281.06 is: 15,558.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,152.16 : 18,138.90 = 11,281.06 : x
  2. Step 2: Convert to fraction form
    13,152.16/18,138.90 = 11,281.06/x
  3. Step 3: Cross multiply
    13,152.16x = 18,138.90 × 11,281.06
  4. Step 4: Simplify right side
    13,152.16x = 204,626,019.23
  5. Step 5: Solve for x
    x = 204,626,019.23/13,152.16
  6. Step 6: Final answer
    x = 15,558.36

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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.