Home / 21,639.15-32,302.29-20,015.91

Finding the Fourth Proportional to 21,639.15, 32,302.29 and 20,015.91

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Solution

The fourth proportional to 21,639.15, 32,302.29 and 20,015.91 is: 29,879.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,639.15 : 32,302.29 = 20,015.91 : x
  2. Step 2: Convert to fraction form
    21,639.15/32,302.29 = 20,015.91/x
  3. Step 3: Cross multiply
    21,639.15x = 32,302.29 × 20,015.91
  4. Step 4: Simplify right side
    21,639.15x = 646,559,804.49
  5. Step 5: Solve for x
    x = 646,559,804.49/21,639.15
  6. Step 6: Final answer
    x = 29,879.17

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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.