Home / 30,726.76-42,406.12-18,798.04

Finding the Fourth Proportional to 30,726.76, 42,406.12 and 18,798.04

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Solution

The fourth proportional to 30,726.76, 42,406.12 and 18,798.04 is: 25,943.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,726.76 : 42,406.12 = 18,798.04 : x
  2. Step 2: Convert to fraction form
    30,726.76/42,406.12 = 18,798.04/x
  3. Step 3: Cross multiply
    30,726.76x = 42,406.12 × 18,798.04
  4. Step 4: Simplify right side
    30,726.76x = 797,151,940.00
  5. Step 5: Solve for x
    x = 797,151,940.00/30,726.76
  6. Step 6: Final answer
    x = 25,943.25

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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.