Home / 54,280.08-81,411.72-21,015.60

Finding the Fourth Proportional to 54,280.08, 81,411.72 and 21,015.60

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Solution

The fourth proportional to 54,280.08, 81,411.72 and 21,015.60 is: 31,520.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,280.08 : 81,411.72 = 21,015.60 : x
  2. Step 2: Convert to fraction form
    54,280.08/81,411.72 = 21,015.60/x
  3. Step 3: Cross multiply
    54,280.08x = 81,411.72 × 21,015.60
  4. Step 4: Simplify right side
    54,280.08x = 1,710,916,142.83
  5. Step 5: Solve for x
    x = 1,710,916,142.83/54,280.08
  6. Step 6: Final answer
    x = 31,520.15

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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.