Home / 21,106.77-31,660.20-14,513.01

Finding the Fourth Proportional to 21,106.77, 31,660.20 and 14,513.01

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Solution

The fourth proportional to 21,106.77, 31,660.20 and 14,513.01 is: 21,769.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,106.77 : 31,660.20 = 14,513.01 : x
  2. Step 2: Convert to fraction form
    21,106.77/31,660.20 = 14,513.01/x
  3. Step 3: Cross multiply
    21,106.77x = 31,660.20 × 14,513.01
  4. Step 4: Simplify right side
    21,106.77x = 459,484,799.20
  5. Step 5: Solve for x
    x = 459,484,799.20/21,106.77
  6. Step 6: Final answer
    x = 21,769.55

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1.5x scale

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.