Home / 18,875.03-28,318.01-7,185.51

Finding the Fourth Proportional to 18,875.03, 28,318.01 and 7,185.51

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Solution

The fourth proportional to 18,875.03, 28,318.01 and 7,185.51 is: 10,780.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,875.03 : 28,318.01 = 7,185.51 : x
  2. Step 2: Convert to fraction form
    18,875.03/28,318.01 = 7,185.51/x
  3. Step 3: Cross multiply
    18,875.03x = 28,318.01 × 7,185.51
  4. Step 4: Simplify right side
    18,875.03x = 203,479,308.11
  5. Step 5: Solve for x
    x = 203,479,308.11/18,875.03
  6. Step 6: Final answer
    x = 10,780.35

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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.