Home / 20,429.01-28,192.46-11,477.50

Finding the Fourth Proportional to 20,429.01, 28,192.46 and 11,477.50

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Solution

The fourth proportional to 20,429.01, 28,192.46 and 11,477.50 is: 15,839.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.01 : 28,192.46 = 11,477.50 : x
  2. Step 2: Convert to fraction form
    20,429.01/28,192.46 = 11,477.50/x
  3. Step 3: Cross multiply
    20,429.01x = 28,192.46 × 11,477.50
  4. Step 4: Simplify right side
    20,429.01x = 323,578,831.78
  5. Step 5: Solve for x
    x = 323,578,831.78/20,429.01
  6. Step 6: Final answer
    x = 15,839.18

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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.