Home / 30,728.23-42,412.95-18,801.52

Finding the Fourth Proportional to 30,728.23, 42,412.95 and 18,801.52

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Solution

The fourth proportional to 30,728.23, 42,412.95 and 18,801.52 is: 25,950.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,728.23 : 42,412.95 = 18,801.52 : x
  2. Step 2: Convert to fraction form
    30,728.23/42,412.95 = 18,801.52/x
  3. Step 3: Cross multiply
    30,728.23x = 42,412.95 × 18,801.52
  4. Step 4: Simplify right side
    30,728.23x = 797,427,821.65
  5. Step 5: Solve for x
    x = 797,427,821.65/30,728.23
  6. Step 6: Final answer
    x = 25,950.99

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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.