Home / 30,515.99-42,109.85-18,583.17

Finding the Fourth Proportional to 30,515.99, 42,109.85 and 18,583.17

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Solution

The fourth proportional to 30,515.99, 42,109.85 and 18,583.17 is: 25,643.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,515.99 : 42,109.85 = 18,583.17 : x
  2. Step 2: Convert to fraction form
    30,515.99/42,109.85 = 18,583.17/x
  3. Step 3: Cross multiply
    30,515.99x = 42,109.85 × 18,583.17
  4. Step 4: Simplify right side
    30,515.99x = 782,534,705.59
  5. Step 5: Solve for x
    x = 782,534,705.59/30,515.99
  6. Step 6: Final answer
    x = 25,643.43

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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.