Home / 18,948.09-28,388.08-11,152.65

Finding the Fourth Proportional to 18,948.09, 28,388.08 and 11,152.65

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Solution

The fourth proportional to 18,948.09, 28,388.08 and 11,152.65 is: 16,708.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,948.09 : 28,388.08 = 11,152.65 : x
  2. Step 2: Convert to fraction form
    18,948.09/28,388.08 = 11,152.65/x
  3. Step 3: Cross multiply
    18,948.09x = 28,388.08 × 11,152.65
  4. Step 4: Simplify right side
    18,948.09x = 316,602,320.41
  5. Step 5: Solve for x
    x = 316,602,320.41/18,948.09
  6. Step 6: Final answer
    x = 16,708.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.