Home / 19,661.12-27,124.29-11,161.40

Finding the Fourth Proportional to 19,661.12, 27,124.29 and 11,161.40

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Solution

The fourth proportional to 19,661.12, 27,124.29 and 11,161.40 is: 15,398.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,661.12 : 27,124.29 = 11,161.40 : x
  2. Step 2: Convert to fraction form
    19,661.12/27,124.29 = 11,161.40/x
  3. Step 3: Cross multiply
    19,661.12x = 27,124.29 × 11,161.40
  4. Step 4: Simplify right side
    19,661.12x = 302,745,050.41
  5. Step 5: Solve for x
    x = 302,745,050.41/19,661.12
  6. Step 6: Final answer
    x = 15,398.16

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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.