Home / 11,154.51-15,391.49-6,437.88

Finding the Fourth Proportional to 11,154.51, 15,391.49 and 6,437.88

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Solution

The fourth proportional to 11,154.51, 15,391.49 and 6,437.88 is: 8,883.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,154.51 : 15,391.49 = 6,437.88 : x
  2. Step 2: Convert to fraction form
    11,154.51/15,391.49 = 6,437.88/x
  3. Step 3: Cross multiply
    11,154.51x = 15,391.49 × 6,437.88
  4. Step 4: Simplify right side
    11,154.51x = 99,088,533.45
  5. Step 5: Solve for x
    x = 99,088,533.45/11,154.51
  6. Step 6: Final answer
    x = 8,883.27

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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.