Home / 10,381.35-15,571.47-2,985.51

Finding the Fourth Proportional to 10,381.35, 15,571.47 and 2,985.51

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Solution

The fourth proportional to 10,381.35, 15,571.47 and 2,985.51 is: 4,478.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,381.35 : 15,571.47 = 2,985.51 : x
  2. Step 2: Convert to fraction form
    10,381.35/15,571.47 = 2,985.51/x
  3. Step 3: Cross multiply
    10,381.35x = 15,571.47 × 2,985.51
  4. Step 4: Simplify right side
    10,381.35x = 46,488,848.99
  5. Step 5: Solve for x
    x = 46,488,848.99/10,381.35
  6. Step 6: Final answer
    x = 4,478.11

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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.