Home / 28,571.04-42,851.16-11,930.40

Finding the Fourth Proportional to 28,571.04, 42,851.16 and 11,930.40

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Solution

The fourth proportional to 28,571.04, 42,851.16 and 11,930.40 is: 17,893.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,571.04 : 42,851.16 = 11,930.40 : x
  2. Step 2: Convert to fraction form
    28,571.04/42,851.16 = 11,930.40/x
  3. Step 3: Cross multiply
    28,571.04x = 42,851.16 × 11,930.40
  4. Step 4: Simplify right side
    28,571.04x = 511,231,479.26
  5. Step 5: Solve for x
    x = 511,231,479.26/28,571.04
  6. Step 6: Final answer
    x = 17,893.35

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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.