Home / 30,901.14-42,664.05-18,329.94

Finding the Fourth Proportional to 30,901.14, 42,664.05 and 18,329.94

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Solution

The fourth proportional to 30,901.14, 42,664.05 and 18,329.94 is: 25,307.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,901.14 : 42,664.05 = 18,329.94 : x
  2. Step 2: Convert to fraction form
    30,901.14/42,664.05 = 18,329.94/x
  3. Step 3: Cross multiply
    30,901.14x = 42,664.05 × 18,329.94
  4. Step 4: Simplify right side
    30,901.14x = 782,029,476.66
  5. Step 5: Solve for x
    x = 782,029,476.66/30,901.14
  6. Step 6: Final answer
    x = 25,307.46

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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.