Home / 21,328.14-29,432.15-11,768.02

Finding the Fourth Proportional to 21,328.14, 29,432.15 and 11,768.02

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Solution

The fourth proportional to 21,328.14, 29,432.15 and 11,768.02 is: 16,239.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328.14 : 29,432.15 = 11,768.02 : x
  2. Step 2: Convert to fraction form
    21,328.14/29,432.15 = 11,768.02/x
  3. Step 3: Cross multiply
    21,328.14x = 29,432.15 × 11,768.02
  4. Step 4: Simplify right side
    21,328.14x = 346,358,129.84
  5. Step 5: Solve for x
    x = 346,358,129.84/21,328.14
  6. Step 6: Final answer
    x = 16,239.49

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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.