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Finding the Fourth Proportional to 21,980.03, 32,970.09 and 5,340.08

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Solution

The fourth proportional to 21,980.03, 32,970.09 and 5,340.08 is: 8,010.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,980.03 : 32,970.09 = 5,340.08 : x
  2. Step 2: Convert to fraction form
    21,980.03/32,970.09 = 5,340.08/x
  3. Step 3: Cross multiply
    21,980.03x = 32,970.09 × 5,340.08
  4. Step 4: Simplify right side
    21,980.03x = 176,062,805.16
  5. Step 5: Solve for x
    x = 176,062,805.16/21,980.03
  6. Step 6: Final answer
    x = 8,010.12

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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.