Home / 30,619.09-42,256.79-17,191.23

Finding the Fourth Proportional to 30,619.09, 42,256.79 and 17,191.23

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Solution

The fourth proportional to 30,619.09, 42,256.79 and 17,191.23 is: 23,725.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,619.09 : 42,256.79 = 17,191.23 : x
  2. Step 2: Convert to fraction form
    30,619.09/42,256.79 = 17,191.23/x
  3. Step 3: Cross multiply
    30,619.09x = 42,256.79 × 17,191.23
  4. Step 4: Simplify right side
    30,619.09x = 726,445,898.71
  5. Step 5: Solve for x
    x = 726,445,898.71/30,619.09
  6. Step 6: Final answer
    x = 23,725.26

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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.