Home / 12,582.28-18,870.90-11,957.80

Finding the Fourth Proportional to 12,582.28, 18,870.90 and 11,957.80

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Solution

The fourth proportional to 12,582.28, 18,870.90 and 11,957.80 is: 17,934.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,582.28 : 18,870.90 = 11,957.80 : x
  2. Step 2: Convert to fraction form
    12,582.28/18,870.90 = 11,957.80/x
  3. Step 3: Cross multiply
    12,582.28x = 18,870.90 × 11,957.80
  4. Step 4: Simplify right side
    12,582.28x = 225,654,448.02
  5. Step 5: Solve for x
    x = 225,654,448.02/12,582.28
  6. Step 6: Final answer
    x = 17,934.31

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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.