Home / 12,124.23-16,741.13-7,877.40

Finding the Fourth Proportional to 12,124.23, 16,741.13 and 7,877.40

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Solution

The fourth proportional to 12,124.23, 16,741.13 and 7,877.40 is: 10,877.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,124.23 : 16,741.13 = 7,877.40 : x
  2. Step 2: Convert to fraction form
    12,124.23/16,741.13 = 7,877.40/x
  3. Step 3: Cross multiply
    12,124.23x = 16,741.13 × 7,877.40
  4. Step 4: Simplify right side
    12,124.23x = 131,876,538.08
  5. Step 5: Solve for x
    x = 131,876,538.08/12,124.23
  6. Step 6: Final answer
    x = 10,877.11

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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.