Home / 30,439.65-41,979.51-19,110.20

Finding the Fourth Proportional to 30,439.65, 41,979.51 and 19,110.20

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Solution

The fourth proportional to 30,439.65, 41,979.51 and 19,110.20 is: 26,354.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,439.65 : 41,979.51 = 19,110.20 : x
  2. Step 2: Convert to fraction form
    30,439.65/41,979.51 = 19,110.20/x
  3. Step 3: Cross multiply
    30,439.65x = 41,979.51 × 19,110.20
  4. Step 4: Simplify right side
    30,439.65x = 802,236,622.10
  5. Step 5: Solve for x
    x = 802,236,622.10/30,439.65
  6. Step 6: Final answer
    x = 26,354.99

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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.