Home / 19,910.64-29,812.59-10,531.20

Finding the Fourth Proportional to 19,910.64, 29,812.59 and 10,531.20

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Solution

The fourth proportional to 19,910.64, 29,812.59 and 10,531.20 is: 15,768.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,910.64 : 29,812.59 = 10,531.20 : x
  2. Step 2: Convert to fraction form
    19,910.64/29,812.59 = 10,531.20/x
  3. Step 3: Cross multiply
    19,910.64x = 29,812.59 × 10,531.20
  4. Step 4: Simplify right side
    19,910.64x = 313,962,347.81
  5. Step 5: Solve for x
    x = 313,962,347.81/19,910.64
  6. Step 6: Final answer
    x = 15,768.57

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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.