Home / 19,929.89-27,503.07-10,977.20

Finding the Fourth Proportional to 19,929.89, 27,503.07 and 10,977.20

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Solution

The fourth proportional to 19,929.89, 27,503.07 and 10,977.20 is: 15,148.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,929.89 : 27,503.07 = 10,977.20 : x
  2. Step 2: Convert to fraction form
    19,929.89/27,503.07 = 10,977.20/x
  3. Step 3: Cross multiply
    19,929.89x = 27,503.07 × 10,977.20
  4. Step 4: Simplify right side
    19,929.89x = 301,906,624.46
  5. Step 5: Solve for x
    x = 301,906,624.46/19,929.89
  6. Step 6: Final answer
    x = 15,148.43

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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.