Home / 28,616.08-42,918.88-11,971.68

Finding the Fourth Proportional to 28,616.08, 42,918.88 and 11,971.68

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Solution

The fourth proportional to 28,616.08, 42,918.88 and 11,971.68 is: 17,955.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,616.08 : 42,918.88 = 11,971.68 : x
  2. Step 2: Convert to fraction form
    28,616.08/42,918.88 = 11,971.68/x
  3. Step 3: Cross multiply
    28,616.08x = 42,918.88 × 11,971.68
  4. Step 4: Simplify right side
    28,616.08x = 513,811,097.32
  5. Step 5: Solve for x
    x = 513,811,097.32/28,616.08
  6. Step 6: Final answer
    x = 17,955.33

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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.