Home / 25,678.72-35,426.08-15,605.56

Finding the Fourth Proportional to 25,678.72, 35,426.08 and 15,605.56

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Solution

The fourth proportional to 25,678.72, 35,426.08 and 15,605.56 is: 21,529.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,678.72 : 35,426.08 = 15,605.56 : x
  2. Step 2: Convert to fraction form
    25,678.72/35,426.08 = 15,605.56/x
  3. Step 3: Cross multiply
    25,678.72x = 35,426.08 × 15,605.56
  4. Step 4: Simplify right side
    25,678.72x = 552,843,817.00
  5. Step 5: Solve for x
    x = 552,843,817.00/25,678.72
  6. Step 6: Final answer
    x = 21,529.26

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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.