Home / 20,877.04-28,811.51-12,384.19

Finding the Fourth Proportional to 20,877.04, 28,811.51 and 12,384.19

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Solution

The fourth proportional to 20,877.04, 28,811.51 and 12,384.19 is: 17,090.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877.04 : 28,811.51 = 12,384.19 : x
  2. Step 2: Convert to fraction form
    20,877.04/28,811.51 = 12,384.19/x
  3. Step 3: Cross multiply
    20,877.04x = 28,811.51 × 12,384.19
  4. Step 4: Simplify right side
    20,877.04x = 356,807,214.03
  5. Step 5: Solve for x
    x = 356,807,214.03/20,877.04
  6. Step 6: Final answer
    x = 17,090.89

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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.