Home / 15,558.83-21,489.11-11,328.81

Finding the Fourth Proportional to 15,558.83, 21,489.11 and 11,328.81

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Solution

The fourth proportional to 15,558.83, 21,489.11 and 11,328.81 is: 15,646.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,558.83 : 21,489.11 = 11,328.81 : x
  2. Step 2: Convert to fraction form
    15,558.83/21,489.11 = 11,328.81/x
  3. Step 3: Cross multiply
    15,558.83x = 21,489.11 × 11,328.81
  4. Step 4: Simplify right side
    15,558.83x = 243,446,044.26
  5. Step 5: Solve for x
    x = 243,446,044.26/15,558.83
  6. Step 6: Final answer
    x = 15,646.81

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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.