Home / 13,428.99-18,531.11-7,460.66

Finding the Fourth Proportional to 13,428.99, 18,531.11 and 7,460.66

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Solution

The fourth proportional to 13,428.99, 18,531.11 and 7,460.66 is: 10,295.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.99 : 18,531.11 = 7,460.66 : x
  2. Step 2: Convert to fraction form
    13,428.99/18,531.11 = 7,460.66/x
  3. Step 3: Cross multiply
    13,428.99x = 18,531.11 × 7,460.66
  4. Step 4: Simplify right side
    13,428.99x = 138,254,181.17
  5. Step 5: Solve for x
    x = 138,254,181.17/13,428.99
  6. Step 6: Final answer
    x = 10,295.20

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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.