Home / 28,563.68-42,853.08-11,918.18

Finding the Fourth Proportional to 28,563.68, 42,853.08 and 11,918.18

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Solution

The fourth proportional to 28,563.68, 42,853.08 and 11,918.18 is: 17,880.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,563.68 : 42,853.08 = 11,918.18 : x
  2. Step 2: Convert to fraction form
    28,563.68/42,853.08 = 11,918.18/x
  3. Step 3: Cross multiply
    28,563.68x = 42,853.08 × 11,918.18
  4. Step 4: Simplify right side
    28,563.68x = 510,730,720.99
  5. Step 5: Solve for x
    x = 510,730,720.99/28,563.68
  6. Step 6: Final answer
    x = 17,880.42

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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.