Home / 20,232,078.40-30,348,117.60-9,992,981.80

Finding the Fourth Proportional to 20,232,078.40, 30,348,117.60 and 9,992,981.80

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Solution

The fourth proportional to 20,232,078.40, 30,348,117.60 and 9,992,981.80 is: 14,989,472.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,232,078.40 : 30,348,117.60 = 9,992,981.80 : x
  2. Step 2: Convert to fraction form
    20,232,078.40/30,348,117.60 = 9,992,981.80/x
  3. Step 3: Cross multiply
    20,232,078.40x = 30,348,117.60 × 9,992,981.80
  4. Step 4: Simplify right side
    20,232,078.40x = 303,268,186,841,059.69
  5. Step 5: Solve for x
    x = 303,268,186,841,059.69/20,232,078.40
  6. Step 6: Final answer
    x = 14,989,472.70

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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.