Home / 20,816.16-28,726.32-11,384.74

Finding the Fourth Proportional to 20,816.16, 28,726.32 and 11,384.74

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Solution

The fourth proportional to 20,816.16, 28,726.32 and 11,384.74 is: 15,710.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,816.16 : 28,726.32 = 11,384.74 : x
  2. Step 2: Convert to fraction form
    20,816.16/28,726.32 = 11,384.74/x
  3. Step 3: Cross multiply
    20,816.16x = 28,726.32 × 11,384.74
  4. Step 4: Simplify right side
    20,816.16x = 327,041,684.36
  5. Step 5: Solve for x
    x = 327,041,684.36/20,816.16
  6. Step 6: Final answer
    x = 15,710.95

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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.