Home / 11,153.51-15,391.71-6,437.69

Finding the Fourth Proportional to 11,153.51, 15,391.71 and 6,437.69

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Solution

The fourth proportional to 11,153.51, 15,391.71 and 6,437.69 is: 8,883.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.51 : 15,391.71 = 6,437.69 : x
  2. Step 2: Convert to fraction form
    11,153.51/15,391.71 = 6,437.69/x
  3. Step 3: Cross multiply
    11,153.51x = 15,391.71 × 6,437.69
  4. Step 4: Simplify right side
    11,153.51x = 99,086,980.59
  5. Step 5: Solve for x
    x = 99,086,980.59/11,153.51
  6. Step 6: Final answer
    x = 8,883.93

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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.