Home / 30,640.69-42,277.59-17,888.08

Finding the Fourth Proportional to 30,640.69, 42,277.59 and 17,888.08

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Solution

The fourth proportional to 30,640.69, 42,277.59 and 17,888.08 is: 24,681.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,640.69 : 42,277.59 = 17,888.08 : x
  2. Step 2: Convert to fraction form
    30,640.69/42,277.59 = 17,888.08/x
  3. Step 3: Cross multiply
    30,640.69x = 42,277.59 × 17,888.08
  4. Step 4: Simplify right side
    30,640.69x = 756,264,912.13
  5. Step 5: Solve for x
    x = 756,264,912.13/30,640.69
  6. Step 6: Final answer
    x = 24,681.72

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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.