Home / 37,981.80-56,972.70-19,319.40

Finding the Fourth Proportional to 37,981.80, 56,972.70 and 19,319.40

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Solution

The fourth proportional to 37,981.80, 56,972.70 and 19,319.40 is: 28,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,981.80 : 56,972.70 = 19,319.40 : x
  2. Step 2: Convert to fraction form
    37,981.80/56,972.70 = 19,319.40/x
  3. Step 3: Cross multiply
    37,981.80x = 56,972.70 × 19,319.40
  4. Step 4: Simplify right side
    37,981.80x = 1,100,678,380.38
  5. Step 5: Solve for x
    x = 1,100,678,380.38/37,981.80
  6. Step 6: Final answer
    x = 28,979.10

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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.