Home / 20,911.02-28,848.99-11,953.71

Finding the Fourth Proportional to 20,911.02, 28,848.99 and 11,953.71

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Solution

The fourth proportional to 20,911.02, 28,848.99 and 11,953.71 is: 16,491.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,911.02 : 28,848.99 = 11,953.71 : x
  2. Step 2: Convert to fraction form
    20,911.02/28,848.99 = 11,953.71/x
  3. Step 3: Cross multiply
    20,911.02x = 28,848.99 × 11,953.71
  4. Step 4: Simplify right side
    20,911.02x = 344,852,460.25
  5. Step 5: Solve for x
    x = 344,852,460.25/20,911.02
  6. Step 6: Final answer
    x = 16,491.42

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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.