Home / 20,784.04-28,681.56-11,831.35

Finding the Fourth Proportional to 20,784.04, 28,681.56 and 11,831.35

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Solution

The fourth proportional to 20,784.04, 28,681.56 and 11,831.35 is: 16,327.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.04 : 28,681.56 = 11,831.35 : x
  2. Step 2: Convert to fraction form
    20,784.04/28,681.56 = 11,831.35/x
  3. Step 3: Cross multiply
    20,784.04x = 28,681.56 × 11,831.35
  4. Step 4: Simplify right side
    20,784.04x = 339,341,574.91
  5. Step 5: Solve for x
    x = 339,341,574.91/20,784.04
  6. Step 6: Final answer
    x = 16,327.03

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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.