Home / 27,616.81-38,108.86-15,516.35

Finding the Fourth Proportional to 27,616.81, 38,108.86 and 15,516.35

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Solution

The fourth proportional to 27,616.81, 38,108.86 and 15,516.35 is: 21,411.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,616.81 : 38,108.86 = 15,516.35 : x
  2. Step 2: Convert to fraction form
    27,616.81/38,108.86 = 15,516.35/x
  3. Step 3: Cross multiply
    27,616.81x = 38,108.86 × 15,516.35
  4. Step 4: Simplify right side
    27,616.81x = 591,310,409.86
  5. Step 5: Solve for x
    x = 591,310,409.86/27,616.81
  6. Step 6: Final answer
    x = 21,411.25

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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.