Home / 21,810.60-32,740.20-11,969.10

Finding the Fourth Proportional to 21,810.60, 32,740.20 and 11,969.10

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Solution

The fourth proportional to 21,810.60, 32,740.20 and 11,969.10 is: 17,966.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,810.60 : 32,740.20 = 11,969.10 : x
  2. Step 2: Convert to fraction form
    21,810.60/32,740.20 = 11,969.10/x
  3. Step 3: Cross multiply
    21,810.60x = 32,740.20 × 11,969.10
  4. Step 4: Simplify right side
    21,810.60x = 391,870,727.82
  5. Step 5: Solve for x
    x = 391,870,727.82/21,810.60
  6. Step 6: Final answer
    x = 17,966.99

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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.