Home / 12,081,405.60-18,122,108.40-7,303,831.20

Finding the Fourth Proportional to 12,081,405.60, 18,122,108.40 and 7,303,831.20

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Solution

The fourth proportional to 12,081,405.60, 18,122,108.40 and 7,303,831.20 is: 10,955,746.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,081,405.60 : 18,122,108.40 = 7,303,831.20 : x
  2. Step 2: Convert to fraction form
    12,081,405.60/18,122,108.40 = 7,303,831.20/x
  3. Step 3: Cross multiply
    12,081,405.60x = 18,122,108.40 × 7,303,831.20
  4. Step 4: Simplify right side
    12,081,405.60x = 132,360,820,741,702.08
  5. Step 5: Solve for x
    x = 132,360,820,741,702.08/12,081,405.60
  6. Step 6: Final answer
    x = 10,955,746.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.