Home / 15,514.47-21,409.06-8,707.86

Finding the Fourth Proportional to 15,514.47, 21,409.06 and 8,707.86

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Solution

The fourth proportional to 15,514.47, 21,409.06 and 8,707.86 is: 12,016.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,514.47 : 21,409.06 = 8,707.86 : x
  2. Step 2: Convert to fraction form
    15,514.47/21,409.06 = 8,707.86/x
  3. Step 3: Cross multiply
    15,514.47x = 21,409.06 × 8,707.86
  4. Step 4: Simplify right side
    15,514.47x = 186,426,946.63
  5. Step 5: Solve for x
    x = 186,426,946.63/15,514.47
  6. Step 6: Final answer
    x = 12,016.33

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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.