Home / 13,392.36-18,475.56-9,412.20

Finding the Fourth Proportional to 13,392.36, 18,475.56 and 9,412.20

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Solution

The fourth proportional to 13,392.36, 18,475.56 and 9,412.20 is: 12,984.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,392.36 : 18,475.56 = 9,412.20 : x
  2. Step 2: Convert to fraction form
    13,392.36/18,475.56 = 9,412.20/x
  3. Step 3: Cross multiply
    13,392.36x = 18,475.56 × 9,412.20
  4. Step 4: Simplify right side
    13,392.36x = 173,895,665.83
  5. Step 5: Solve for x
    x = 173,895,665.83/13,392.36
  6. Step 6: Final answer
    x = 12,984.69

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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.