Home / 10,065,431.90-15,085,557.21-7,927,070.78

Finding the Fourth Proportional to 10,065,431.90, 15,085,557.21 and 7,927,070.78

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Solution

The fourth proportional to 10,065,431.90, 15,085,557.21 and 7,927,070.78 is: 11,880,690.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,065,431.90 : 15,085,557.21 = 7,927,070.78 : x
  2. Step 2: Convert to fraction form
    10,065,431.90/15,085,557.21 = 7,927,070.78/x
  3. Step 3: Cross multiply
    10,065,431.90x = 15,085,557.21 × 7,927,070.78
  4. Step 4: Simplify right side
    10,065,431.90x = 119,584,279,759,409.33
  5. Step 5: Solve for x
    x = 119,584,279,759,409.33/10,065,431.90
  6. Step 6: Final answer
    x = 11,880,690.36

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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.