Home / 12,555.81-18,754.16-11,836.08

Finding the Fourth Proportional to 12,555.81, 18,754.16 and 11,836.08

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Solution

The fourth proportional to 12,555.81, 18,754.16 and 11,836.08 is: 17,679.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.81 : 18,754.16 = 11,836.08 : x
  2. Step 2: Convert to fraction form
    12,555.81/18,754.16 = 11,836.08/x
  3. Step 3: Cross multiply
    12,555.81x = 18,754.16 × 11,836.08
  4. Step 4: Simplify right side
    12,555.81x = 221,975,678.91
  5. Step 5: Solve for x
    x = 221,975,678.91/12,555.81
  6. Step 6: Final answer
    x = 17,679.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.