Home / 10,913.20-15,055.45-6,877.59

Finding the Fourth Proportional to 10,913.20, 15,055.45 and 6,877.59

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Solution

The fourth proportional to 10,913.20, 15,055.45 and 6,877.59 is: 9,488.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,913.20 : 15,055.45 = 6,877.59 : x
  2. Step 2: Convert to fraction form
    10,913.20/15,055.45 = 6,877.59/x
  3. Step 3: Cross multiply
    10,913.20x = 15,055.45 × 6,877.59
  4. Step 4: Simplify right side
    10,913.20x = 103,545,212.37
  5. Step 5: Solve for x
    x = 103,545,212.37/10,913.20
  6. Step 6: Final answer
    x = 9,488.07

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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.