Home / 19,641.61-27,106.88-11,145.20

Finding the Fourth Proportional to 19,641.61, 27,106.88 and 11,145.20

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Solution

The fourth proportional to 19,641.61, 27,106.88 and 11,145.20 is: 15,381.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,641.61 : 27,106.88 = 11,145.20 : x
  2. Step 2: Convert to fraction form
    19,641.61/27,106.88 = 11,145.20/x
  3. Step 3: Cross multiply
    19,641.61x = 27,106.88 × 11,145.20
  4. Step 4: Simplify right side
    19,641.61x = 302,111,439.06
  5. Step 5: Solve for x
    x = 302,111,439.06/19,641.61
  6. Step 6: Final answer
    x = 15,381.19

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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.