Home / 30,700.91-42,363.47-19,366.13

Finding the Fourth Proportional to 30,700.91, 42,363.47 and 19,366.13

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Solution

The fourth proportional to 30,700.91, 42,363.47 and 19,366.13 is: 26,722.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,700.91 : 42,363.47 = 19,366.13 : x
  2. Step 2: Convert to fraction form
    30,700.91/42,363.47 = 19,366.13/x
  3. Step 3: Cross multiply
    30,700.91x = 42,363.47 × 19,366.13
  4. Step 4: Simplify right side
    30,700.91x = 820,416,467.27
  5. Step 5: Solve for x
    x = 820,416,467.27/30,700.91
  6. Step 6: Final answer
    x = 26,722.87

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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.