Home / 19,784.80-27,309.18-16,285.60

Finding the Fourth Proportional to 19,784.80, 27,309.18 and 16,285.60

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Solution

The fourth proportional to 19,784.80, 27,309.18 and 16,285.60 is: 22,479.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,784.80 : 27,309.18 = 16,285.60 : x
  2. Step 2: Convert to fraction form
    19,784.80/27,309.18 = 16,285.60/x
  3. Step 3: Cross multiply
    19,784.80x = 27,309.18 × 16,285.60
  4. Step 4: Simplify right side
    19,784.80x = 444,746,381.81
  5. Step 5: Solve for x
    x = 444,746,381.81/19,784.80
  6. Step 6: Final answer
    x = 22,479.20

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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.