Home / 25,781.36-38,675.75-9,776.79

Finding the Fourth Proportional to 25,781.36, 38,675.75 and 9,776.79

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Solution

The fourth proportional to 25,781.36, 38,675.75 and 9,776.79 is: 14,666.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,781.36 : 38,675.75 = 9,776.79 : x
  2. Step 2: Convert to fraction form
    25,781.36/38,675.75 = 9,776.79/x
  3. Step 3: Cross multiply
    25,781.36x = 38,675.75 × 9,776.79
  4. Step 4: Simplify right side
    25,781.36x = 378,124,828.23
  5. Step 5: Solve for x
    x = 378,124,828.23/25,781.36
  6. Step 6: Final answer
    x = 14,666.60

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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.