Home / 20,623.79-28,460.81-11,671.13

Finding the Fourth Proportional to 20,623.79, 28,460.81 and 11,671.13

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Solution

The fourth proportional to 20,623.79, 28,460.81 and 11,671.13 is: 16,106.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.79 : 28,460.81 = 11,671.13 : x
  2. Step 2: Convert to fraction form
    20,623.79/28,460.81 = 11,671.13/x
  3. Step 3: Cross multiply
    20,623.79x = 28,460.81 × 11,671.13
  4. Step 4: Simplify right side
    20,623.79x = 332,169,612.76
  5. Step 5: Solve for x
    x = 332,169,612.76/20,623.79
  6. Step 6: Final answer
    x = 16,106.14

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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.