Home / 13,656.06-18,844.65-7,687.98

Finding the Fourth Proportional to 13,656.06, 18,844.65 and 7,687.98

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Solution

The fourth proportional to 13,656.06, 18,844.65 and 7,687.98 is: 10,609.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.06 : 18,844.65 = 7,687.98 : x
  2. Step 2: Convert to fraction form
    13,656.06/18,844.65 = 7,687.98/x
  3. Step 3: Cross multiply
    13,656.06x = 18,844.65 × 7,687.98
  4. Step 4: Simplify right side
    13,656.06x = 144,877,292.31
  5. Step 5: Solve for x
    x = 144,877,292.31/13,656.06
  6. Step 6: Final answer
    x = 10,609.01

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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.