Home / 15,519.60-21,417.21-8,446.01

Finding the Fourth Proportional to 15,519.60, 21,417.21 and 8,446.01

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Solution

The fourth proportional to 15,519.60, 21,417.21 and 8,446.01 is: 11,655.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,519.60 : 21,417.21 = 8,446.01 : x
  2. Step 2: Convert to fraction form
    15,519.60/21,417.21 = 8,446.01/x
  3. Step 3: Cross multiply
    15,519.60x = 21,417.21 × 8,446.01
  4. Step 4: Simplify right side
    15,519.60x = 180,889,862.75
  5. Step 5: Solve for x
    x = 180,889,862.75/15,519.60
  6. Step 6: Final answer
    x = 11,655.58

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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.