Home / 18,870.35-26,045.78-10,911.42

Finding the Fourth Proportional to 18,870.35, 26,045.78 and 10,911.42

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Solution

The fourth proportional to 18,870.35, 26,045.78 and 10,911.42 is: 15,060.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.35 : 26,045.78 = 10,911.42 : x
  2. Step 2: Convert to fraction form
    18,870.35/26,045.78 = 10,911.42/x
  3. Step 3: Cross multiply
    18,870.35x = 26,045.78 × 10,911.42
  4. Step 4: Simplify right side
    18,870.35x = 284,196,390.25
  5. Step 5: Solve for x
    x = 284,196,390.25/18,870.35
  6. Step 6: Final answer
    x = 15,060.48

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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.