Home / 35,871.68-53,830.20-13,687.40

Finding the Fourth Proportional to 35,871.68, 53,830.20 and 13,687.40

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Solution

The fourth proportional to 35,871.68, 53,830.20 and 13,687.40 is: 20,539.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,871.68 : 53,830.20 = 13,687.40 : x
  2. Step 2: Convert to fraction form
    35,871.68/53,830.20 = 13,687.40/x
  3. Step 3: Cross multiply
    35,871.68x = 53,830.20 × 13,687.40
  4. Step 4: Simplify right side
    35,871.68x = 736,795,479.48
  5. Step 5: Solve for x
    x = 736,795,479.48/35,871.68
  6. Step 6: Final answer
    x = 20,539.75

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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.