Home / 19,948.80-29,927.68-17,990.40

Finding the Fourth Proportional to 19,948.80, 29,927.68 and 17,990.40

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Solution

The fourth proportional to 19,948.80, 29,927.68 and 17,990.40 is: 26,989.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,948.80 : 29,927.68 = 17,990.40 : x
  2. Step 2: Convert to fraction form
    19,948.80/29,927.68 = 17,990.40/x
  3. Step 3: Cross multiply
    19,948.80x = 29,927.68 × 17,990.40
  4. Step 4: Simplify right side
    19,948.80x = 538,410,934.27
  5. Step 5: Solve for x
    x = 538,410,934.27/19,948.80
  6. Step 6: Final answer
    x = 26,989.64

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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.