Home / 20,349.63-28,082.77-13,271.99

Finding the Fourth Proportional to 20,349.63, 28,082.77 and 13,271.99

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Solution

The fourth proportional to 20,349.63, 28,082.77 and 13,271.99 is: 18,315.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.63 : 28,082.77 = 13,271.99 : x
  2. Step 2: Convert to fraction form
    20,349.63/28,082.77 = 13,271.99/x
  3. Step 3: Cross multiply
    20,349.63x = 28,082.77 × 13,271.99
  4. Step 4: Simplify right side
    20,349.63x = 372,714,069.02
  5. Step 5: Solve for x
    x = 372,714,069.02/20,349.63
  6. Step 6: Final answer
    x = 18,315.52

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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.