Home / 13,133.97-18,118.59-8,886.51

Finding the Fourth Proportional to 13,133.97, 18,118.59 and 8,886.51

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Solution

The fourth proportional to 13,133.97, 18,118.59 and 8,886.51 is: 12,259.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.97 : 18,118.59 = 8,886.51 : x
  2. Step 2: Convert to fraction form
    13,133.97/18,118.59 = 8,886.51/x
  3. Step 3: Cross multiply
    13,133.97x = 18,118.59 × 8,886.51
  4. Step 4: Simplify right side
    13,133.97x = 161,011,031.22
  5. Step 5: Solve for x
    x = 161,011,031.22/13,133.97
  6. Step 6: Final answer
    x = 12,259.13

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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.