Home / 21,424.69-32,130.82-8,274.07

Finding the Fourth Proportional to 21,424.69, 32,130.82 and 8,274.07

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Solution

The fourth proportional to 21,424.69, 32,130.82 and 8,274.07 is: 12,408.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,424.69 : 32,130.82 = 8,274.07 : x
  2. Step 2: Convert to fraction form
    21,424.69/32,130.82 = 8,274.07/x
  3. Step 3: Cross multiply
    21,424.69x = 32,130.82 × 8,274.07
  4. Step 4: Simplify right side
    21,424.69x = 265,852,653.84
  5. Step 5: Solve for x
    x = 265,852,653.84/21,424.69
  6. Step 6: Final answer
    x = 12,408.70

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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.