Home / 13,267.98-18,309.51-7,889.58

Finding the Fourth Proportional to 13,267.98, 18,309.51 and 7,889.58

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Solution

The fourth proportional to 13,267.98, 18,309.51 and 7,889.58 is: 10,887.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,267.98 : 18,309.51 = 7,889.58 : x
  2. Step 2: Convert to fraction form
    13,267.98/18,309.51 = 7,889.58/x
  3. Step 3: Cross multiply
    13,267.98x = 18,309.51 × 7,889.58
  4. Step 4: Simplify right side
    13,267.98x = 144,454,343.91
  5. Step 5: Solve for x
    x = 144,454,343.91/13,267.98
  6. Step 6: Final answer
    x = 10,887.44

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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.