Home / 15,514.10-21,409.64-8,440.58

Finding the Fourth Proportional to 15,514.10, 21,409.64 and 8,440.58

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Solution

The fourth proportional to 15,514.10, 21,409.64 and 8,440.58 is: 11,648.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,514.10 : 21,409.64 = 8,440.58 : x
  2. Step 2: Convert to fraction form
    15,514.10/21,409.64 = 8,440.58/x
  3. Step 3: Cross multiply
    15,514.10x = 21,409.64 × 8,440.58
  4. Step 4: Simplify right side
    15,514.10x = 180,709,779.19
  5. Step 5: Solve for x
    x = 180,709,779.19/15,514.10
  6. Step 6: Final answer
    x = 11,648.10

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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.