Home / 18,888.15-28,331.01-5,740.64

Finding the Fourth Proportional to 18,888.15, 28,331.01 and 5,740.64

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Solution

The fourth proportional to 18,888.15, 28,331.01 and 5,740.64 is: 8,610.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,888.15 : 28,331.01 = 5,740.64 : x
  2. Step 2: Convert to fraction form
    18,888.15/28,331.01 = 5,740.64/x
  3. Step 3: Cross multiply
    18,888.15x = 28,331.01 × 5,740.64
  4. Step 4: Simplify right side
    18,888.15x = 162,637,987.59
  5. Step 5: Solve for x
    x = 162,637,987.59/18,888.15
  6. Step 6: Final answer
    x = 8,610.58

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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.