Home / 39,988.11-59,989.47-20,008.05

Finding the Fourth Proportional to 39,988.11, 59,989.47 and 20,008.05

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Solution

The fourth proportional to 39,988.11, 59,989.47 and 20,008.05 is: 30,015.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,988.11 : 59,989.47 = 20,008.05 : x
  2. Step 2: Convert to fraction form
    39,988.11/59,989.47 = 20,008.05/x
  3. Step 3: Cross multiply
    39,988.11x = 59,989.47 × 20,008.05
  4. Step 4: Simplify right side
    39,988.11x = 1,200,272,315.23
  5. Step 5: Solve for x
    x = 1,200,272,315.23/39,988.11
  6. Step 6: Final answer
    x = 30,015.73

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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.