Home / 12,090.32-16,657.19-9,355.45

Finding the Fourth Proportional to 12,090.32, 16,657.19 and 9,355.45

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Solution

The fourth proportional to 12,090.32, 16,657.19 and 9,355.45 is: 12,889.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090.32 : 16,657.19 = 9,355.45 : x
  2. Step 2: Convert to fraction form
    12,090.32/16,657.19 = 9,355.45/x
  3. Step 3: Cross multiply
    12,090.32x = 16,657.19 × 9,355.45
  4. Step 4: Simplify right side
    12,090.32x = 155,835,554.66
  5. Step 5: Solve for x
    x = 155,835,554.66/12,090.32
  6. Step 6: Final answer
    x = 12,889.28

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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.