Home / 25,904.80-38,828.40-11,111.20

Finding the Fourth Proportional to 25,904.80, 38,828.40 and 11,111.20

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Solution

The fourth proportional to 25,904.80, 38,828.40 and 11,111.20 is: 16,654.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,904.80 : 38,828.40 = 11,111.20 : x
  2. Step 2: Convert to fraction form
    25,904.80/38,828.40 = 11,111.20/x
  3. Step 3: Cross multiply
    25,904.80x = 38,828.40 × 11,111.20
  4. Step 4: Simplify right side
    25,904.80x = 431,430,118.08
  5. Step 5: Solve for x
    x = 431,430,118.08/25,904.80
  6. Step 6: Final answer
    x = 16,654.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.