Home / 12,905.64-19,359.48-5,510.16

Finding the Fourth Proportional to 12,905.64, 19,359.48 and 5,510.16

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Solution

The fourth proportional to 12,905.64, 19,359.48 and 5,510.16 is: 8,265.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.64 : 19,359.48 = 5,510.16 : x
  2. Step 2: Convert to fraction form
    12,905.64/19,359.48 = 5,510.16/x
  3. Step 3: Cross multiply
    12,905.64x = 19,359.48 × 5,510.16
  4. Step 4: Simplify right side
    12,905.64x = 106,673,832.32
  5. Step 5: Solve for x
    x = 106,673,832.32/12,905.64
  6. Step 6: Final answer
    x = 8,265.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.