Home / 13,427.02-18,526.30-8,121.72

Finding the Fourth Proportional to 13,427.02, 18,526.30 and 8,121.72

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Solution

The fourth proportional to 13,427.02, 18,526.30 and 8,121.72 is: 11,206.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.02 : 18,526.30 = 8,121.72 : x
  2. Step 2: Convert to fraction form
    13,427.02/18,526.30 = 8,121.72/x
  3. Step 3: Cross multiply
    13,427.02x = 18,526.30 × 8,121.72
  4. Step 4: Simplify right side
    13,427.02x = 150,465,421.24
  5. Step 5: Solve for x
    x = 150,465,421.24/13,427.02
  6. Step 6: Final answer
    x = 11,206.17

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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.