Home / 15,038.48-20,755.32-8,663.84

Finding the Fourth Proportional to 15,038.48, 20,755.32 and 8,663.84

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Solution

The fourth proportional to 15,038.48, 20,755.32 and 8,663.84 is: 11,957.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,038.48 : 20,755.32 = 8,663.84 : x
  2. Step 2: Convert to fraction form
    15,038.48/20,755.32 = 8,663.84/x
  3. Step 3: Cross multiply
    15,038.48x = 20,755.32 × 8,663.84
  4. Step 4: Simplify right side
    15,038.48x = 179,820,771.63
  5. Step 5: Solve for x
    x = 179,820,771.63/15,038.48
  6. Step 6: Final answer
    x = 11,957.38

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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.