Home / 21,720.51-32,582.58-6,931.53

Finding the Fourth Proportional to 21,720.51, 32,582.58 and 6,931.53

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Solution

The fourth proportional to 21,720.51, 32,582.58 and 6,931.53 is: 10,397.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,720.51 : 32,582.58 = 6,931.53 : x
  2. Step 2: Convert to fraction form
    21,720.51/32,582.58 = 6,931.53/x
  3. Step 3: Cross multiply
    21,720.51x = 32,582.58 × 6,931.53
  4. Step 4: Simplify right side
    21,720.51x = 225,847,130.75
  5. Step 5: Solve for x
    x = 225,847,130.75/21,720.51
  6. Step 6: Final answer
    x = 10,397.87

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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.