Home / 30,986.74-42,756.42-17,555.22

Finding the Fourth Proportional to 30,986.74, 42,756.42 and 17,555.22

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Solution

The fourth proportional to 30,986.74, 42,756.42 and 17,555.22 is: 24,223.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,986.74 : 42,756.42 = 17,555.22 : x
  2. Step 2: Convert to fraction form
    30,986.74/42,756.42 = 17,555.22/x
  3. Step 3: Cross multiply
    30,986.74x = 42,756.42 × 17,555.22
  4. Step 4: Simplify right side
    30,986.74x = 750,598,359.51
  5. Step 5: Solve for x
    x = 750,598,359.51/30,986.74
  6. Step 6: Final answer
    x = 24,223.21

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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.