Home / 30,991.18-42,767.70-17,564.98

Finding the Fourth Proportional to 30,991.18, 42,767.70 and 17,564.98

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Solution

The fourth proportional to 30,991.18, 42,767.70 and 17,564.98 is: 24,239.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,991.18 : 42,767.70 = 17,564.98 : x
  2. Step 2: Convert to fraction form
    30,991.18/42,767.70 = 17,564.98/x
  3. Step 3: Cross multiply
    30,991.18x = 42,767.70 × 17,564.98
  4. Step 4: Simplify right side
    30,991.18x = 751,213,795.15
  5. Step 5: Solve for x
    x = 751,213,795.15/30,991.18
  6. Step 6: Final answer
    x = 24,239.60

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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.