Home / 10,403,990.40-15,605,985.60-6,813,811.20

Finding the Fourth Proportional to 10,403,990.40, 15,605,985.60 and 6,813,811.20

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Solution

The fourth proportional to 10,403,990.40, 15,605,985.60 and 6,813,811.20 is: 10,220,716.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,403,990.40 : 15,605,985.60 = 6,813,811.20 : x
  2. Step 2: Convert to fraction form
    10,403,990.40/15,605,985.60 = 6,813,811.20/x
  3. Step 3: Cross multiply
    10,403,990.40x = 15,605,985.60 × 6,813,811.20
  4. Step 4: Simplify right side
    10,403,990.40x = 106,336,239,468,318.72
  5. Step 5: Solve for x
    x = 106,336,239,468,318.72/10,403,990.40
  6. Step 6: Final answer
    x = 10,220,716.80

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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.