Home / 20,440.02-28,206.49-11,488.01

Finding the Fourth Proportional to 20,440.02, 28,206.49 and 11,488.01

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Solution

The fourth proportional to 20,440.02, 28,206.49 and 11,488.01 is: 15,853.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.02 : 28,206.49 = 11,488.01 : x
  2. Step 2: Convert to fraction form
    20,440.02/28,206.49 = 11,488.01/x
  3. Step 3: Cross multiply
    20,440.02x = 28,206.49 × 11,488.01
  4. Step 4: Simplify right side
    20,440.02x = 324,036,584.79
  5. Step 5: Solve for x
    x = 324,036,584.79/20,440.02
  6. Step 6: Final answer
    x = 15,853.05

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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.