Home / 18,129.96-25,035.35-11,426.81

Finding the Fourth Proportional to 18,129.96, 25,035.35 and 11,426.81

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Solution

The fourth proportional to 18,129.96, 25,035.35 and 11,426.81 is: 15,779.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.96 : 25,035.35 = 11,426.81 : x
  2. Step 2: Convert to fraction form
    18,129.96/25,035.35 = 11,426.81/x
  3. Step 3: Cross multiply
    18,129.96x = 25,035.35 × 11,426.81
  4. Step 4: Simplify right side
    18,129.96x = 286,074,005.42
  5. Step 5: Solve for x
    x = 286,074,005.42/18,129.96
  6. Step 6: Final answer
    x = 15,779.08

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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.