Home / 20,017.79-30,032.76-10,656.22

Finding the Fourth Proportional to 20,017.79, 30,032.76 and 10,656.22

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Solution

The fourth proportional to 20,017.79, 30,032.76 and 10,656.22 is: 15,987.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,017.79 : 30,032.76 = 10,656.22 : x
  2. Step 2: Convert to fraction form
    20,017.79/30,032.76 = 10,656.22/x
  3. Step 3: Cross multiply
    20,017.79x = 30,032.76 × 10,656.22
  4. Step 4: Simplify right side
    20,017.79x = 320,035,697.77
  5. Step 5: Solve for x
    x = 320,035,697.77/20,017.79
  6. Step 6: Final answer
    x = 15,987.56

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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.