Home / 30,640.71-42,277.62-17,888.12

Finding the Fourth Proportional to 30,640.71, 42,277.62 and 17,888.12

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Solution

The fourth proportional to 30,640.71, 42,277.62 and 17,888.12 is: 24,681.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,640.71 : 42,277.62 = 17,888.12 : x
  2. Step 2: Convert to fraction form
    30,640.71/42,277.62 = 17,888.12/x
  3. Step 3: Cross multiply
    30,640.71x = 42,277.62 × 17,888.12
  4. Step 4: Simplify right side
    30,640.71x = 756,266,928.49
  5. Step 5: Solve for x
    x = 756,266,928.49/30,640.71
  6. Step 6: Final answer
    x = 24,681.77

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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.