Home / 11,387.76-16,948.86-11,278.32

Finding the Fourth Proportional to 11,387.76, 16,948.86 and 11,278.32

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Solution

The fourth proportional to 11,387.76, 16,948.86 and 11,278.32 is: 16,785.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,387.76 : 16,948.86 = 11,278.32 : x
  2. Step 2: Convert to fraction form
    11,387.76/16,948.86 = 11,278.32/x
  3. Step 3: Cross multiply
    11,387.76x = 16,948.86 × 11,278.32
  4. Step 4: Simplify right side
    11,387.76x = 191,154,666.72
  5. Step 5: Solve for x
    x = 191,154,666.72/11,387.76
  6. Step 6: Final answer
    x = 16,785.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.