Home / 13,290.12-18,320.34-10,928.16

Finding the Fourth Proportional to 13,290.12, 18,320.34 and 10,928.16

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Solution

The fourth proportional to 13,290.12, 18,320.34 and 10,928.16 is: 15,064.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.12 : 18,320.34 = 10,928.16 : x
  2. Step 2: Convert to fraction form
    13,290.12/18,320.34 = 10,928.16/x
  3. Step 3: Cross multiply
    13,290.12x = 18,320.34 × 10,928.16
  4. Step 4: Simplify right side
    13,290.12x = 200,207,606.77
  5. Step 5: Solve for x
    x = 200,207,606.77/13,290.12
  6. Step 6: Final answer
    x = 15,064.39

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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.