Home / 10,877.40-16,318.08-7,182.72

Finding the Fourth Proportional to 10,877.40, 16,318.08 and 7,182.72

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Solution

The fourth proportional to 10,877.40, 16,318.08 and 7,182.72 is: 10,775.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,877.40 : 16,318.08 = 7,182.72 : x
  2. Step 2: Convert to fraction form
    10,877.40/16,318.08 = 7,182.72/x
  3. Step 3: Cross multiply
    10,877.40x = 16,318.08 × 7,182.72
  4. Step 4: Simplify right side
    10,877.40x = 117,208,199.58
  5. Step 5: Solve for x
    x = 117,208,199.58/10,877.40
  6. Step 6: Final answer
    x = 10,775.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.