Home / 13,390.80-18,476.10-9,613.32

Finding the Fourth Proportional to 13,390.80, 18,476.10 and 9,613.32

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Solution

The fourth proportional to 13,390.80, 18,476.10 and 9,613.32 is: 13,264.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390.80 : 18,476.10 = 9,613.32 : x
  2. Step 2: Convert to fraction form
    13,390.80/18,476.10 = 9,613.32/x
  3. Step 3: Cross multiply
    13,390.80x = 18,476.10 × 9,613.32
  4. Step 4: Simplify right side
    13,390.80x = 177,616,661.65
  5. Step 5: Solve for x
    x = 177,616,661.65/13,390.80
  6. Step 6: Final answer
    x = 13,264.08

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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.