Home / 30,815.36-42,524.20-19,491.04

Finding the Fourth Proportional to 30,815.36, 42,524.20 and 19,491.04

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Solution

The fourth proportional to 30,815.36, 42,524.20 and 19,491.04 is: 26,897.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,815.36 : 42,524.20 = 19,491.04 : x
  2. Step 2: Convert to fraction form
    30,815.36/42,524.20 = 19,491.04/x
  3. Step 3: Cross multiply
    30,815.36x = 42,524.20 × 19,491.04
  4. Step 4: Simplify right side
    30,815.36x = 828,840,883.17
  5. Step 5: Solve for x
    x = 828,840,883.17/30,815.36
  6. Step 6: Final answer
    x = 26,897.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.