Home / 25,783.79-35,581.99-15,712.65

Finding the Fourth Proportional to 25,783.79, 35,581.99 and 15,712.65

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Solution

The fourth proportional to 25,783.79, 35,581.99 and 15,712.65 is: 21,683.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,783.79 : 35,581.99 = 15,712.65 : x
  2. Step 2: Convert to fraction form
    25,783.79/35,581.99 = 15,712.65/x
  3. Step 3: Cross multiply
    25,783.79x = 35,581.99 × 15,712.65
  4. Step 4: Simplify right side
    25,783.79x = 559,087,463.77
  5. Step 5: Solve for x
    x = 559,087,463.77/25,783.79
  6. Step 6: Final answer
    x = 21,683.68

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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.