Home / 13,253.83-18,282.71-11,390.02

Finding the Fourth Proportional to 13,253.83, 18,282.71 and 11,390.02

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Solution

The fourth proportional to 13,253.83, 18,282.71 and 11,390.02 is: 15,711.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,253.83 : 18,282.71 = 11,390.02 : x
  2. Step 2: Convert to fraction form
    13,253.83/18,282.71 = 11,390.02/x
  3. Step 3: Cross multiply
    13,253.83x = 18,282.71 × 11,390.02
  4. Step 4: Simplify right side
    13,253.83x = 208,240,415.32
  5. Step 5: Solve for x
    x = 208,240,415.32/13,253.83
  6. Step 6: Final answer
    x = 15,711.72

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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.