Home / 35,789.15-53,643.21-18,221.87

Finding the Fourth Proportional to 35,789.15, 53,643.21 and 18,221.87

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Solution

The fourth proportional to 35,789.15, 53,643.21 and 18,221.87 is: 27,312.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,789.15 : 53,643.21 = 18,221.87 : x
  2. Step 2: Convert to fraction form
    35,789.15/53,643.21 = 18,221.87/x
  3. Step 3: Cross multiply
    35,789.15x = 53,643.21 × 18,221.87
  4. Step 4: Simplify right side
    35,789.15x = 977,479,330.79
  5. Step 5: Solve for x
    x = 977,479,330.79/35,789.15
  6. Step 6: Final answer
    x = 27,312.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.