Home / 20,972.13-28,941.53-11,541.30

Finding the Fourth Proportional to 20,972.13, 28,941.53 and 11,541.30

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Solution

The fourth proportional to 20,972.13, 28,941.53 and 11,541.30 is: 15,926.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.13 : 28,941.53 = 11,541.30 : x
  2. Step 2: Convert to fraction form
    20,972.13/28,941.53 = 11,541.30/x
  3. Step 3: Cross multiply
    20,972.13x = 28,941.53 × 11,541.30
  4. Step 4: Simplify right side
    20,972.13x = 334,022,880.19
  5. Step 5: Solve for x
    x = 334,022,880.19/20,972.13
  6. Step 6: Final answer
    x = 15,926.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.