Home / 21,790.80-32,686.38-14,005.08

Finding the Fourth Proportional to 21,790.80, 32,686.38 and 14,005.08

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Solution

The fourth proportional to 21,790.80, 32,686.38 and 14,005.08 is: 21,007.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,790.80 : 32,686.38 = 14,005.08 : x
  2. Step 2: Convert to fraction form
    21,790.80/32,686.38 = 14,005.08/x
  3. Step 3: Cross multiply
    21,790.80x = 32,686.38 × 14,005.08
  4. Step 4: Simplify right side
    21,790.80x = 457,775,366.81
  5. Step 5: Solve for x
    x = 457,775,366.81/21,790.80
  6. Step 6: Final answer
    x = 21,007.74

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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.