Home / 21,688.80-32,358.18-19,322.21

Finding the Fourth Proportional to 21,688.80, 32,358.18 and 19,322.21

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Solution

The fourth proportional to 21,688.80, 32,358.18 and 19,322.21 is: 28,827.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,688.80 : 32,358.18 = 19,322.21 : x
  2. Step 2: Convert to fraction form
    21,688.80/32,358.18 = 19,322.21/x
  3. Step 3: Cross multiply
    21,688.80x = 32,358.18 × 19,322.21
  4. Step 4: Simplify right side
    21,688.80x = 625,231,387.39
  5. Step 5: Solve for x
    x = 625,231,387.39/21,688.80
  6. Step 6: Final answer
    x = 28,827.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.