Home / 38,831.04-53,579.88-21,830.40

Finding the Fourth Proportional to 38,831.04, 53,579.88 and 21,830.40

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Solution

The fourth proportional to 38,831.04, 53,579.88 and 21,830.40 is: 30,122.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,831.04 : 53,579.88 = 21,830.40 : x
  2. Step 2: Convert to fraction form
    38,831.04/53,579.88 = 21,830.40/x
  3. Step 3: Cross multiply
    38,831.04x = 53,579.88 × 21,830.40
  4. Step 4: Simplify right side
    38,831.04x = 1,169,670,212.35
  5. Step 5: Solve for x
    x = 1,169,670,212.35/38,831.04
  6. Step 6: Final answer
    x = 30,122.04

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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.