Home / 15,114.86-20,858.10-8,400.32

Finding the Fourth Proportional to 15,114.86, 20,858.10 and 8,400.32

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Solution

The fourth proportional to 15,114.86, 20,858.10 and 8,400.32 is: 11,592.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,114.86 : 20,858.10 = 8,400.32 : x
  2. Step 2: Convert to fraction form
    15,114.86/20,858.10 = 8,400.32/x
  3. Step 3: Cross multiply
    15,114.86x = 20,858.10 × 8,400.32
  4. Step 4: Simplify right side
    15,114.86x = 175,214,714.59
  5. Step 5: Solve for x
    x = 175,214,714.59/15,114.86
  6. Step 6: Final answer
    x = 11,592.22

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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.