Home / 13,225.79-18,216.56-9,857.81

Finding the Fourth Proportional to 13,225.79, 18,216.56 and 9,857.81

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Solution

The fourth proportional to 13,225.79, 18,216.56 and 9,857.81 is: 13,577.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,225.79 : 18,216.56 = 9,857.81 : x
  2. Step 2: Convert to fraction form
    13,225.79/18,216.56 = 9,857.81/x
  3. Step 3: Cross multiply
    13,225.79x = 18,216.56 × 9,857.81
  4. Step 4: Simplify right side
    13,225.79x = 179,575,338.04
  5. Step 5: Solve for x
    x = 179,575,338.04/13,225.79
  6. Step 6: Final answer
    x = 13,577.66

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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.