Home / 20,731.03-28,605.23-12,232.51

Finding the Fourth Proportional to 20,731.03, 28,605.23 and 12,232.51

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Solution

The fourth proportional to 20,731.03, 28,605.23 and 12,232.51 is: 16,878.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731.03 : 28,605.23 = 12,232.51 : x
  2. Step 2: Convert to fraction form
    20,731.03/28,605.23 = 12,232.51/x
  3. Step 3: Cross multiply
    20,731.03x = 28,605.23 × 12,232.51
  4. Step 4: Simplify right side
    20,731.03x = 349,913,762.03
  5. Step 5: Solve for x
    x = 349,913,762.03/20,731.03
  6. Step 6: Final answer
    x = 16,878.74

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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.