Home / 10,112,980.80-15,147,352.80-7,851,374.40

Finding the Fourth Proportional to 10,112,980.80, 15,147,352.80 and 7,851,374.40

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Solution

The fourth proportional to 10,112,980.80, 15,147,352.80 and 7,851,374.40 is: 11,759,889.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,112,980.80 : 15,147,352.80 = 7,851,374.40 : x
  2. Step 2: Convert to fraction form
    10,112,980.80/15,147,352.80 = 7,851,374.40/x
  3. Step 3: Cross multiply
    10,112,980.80x = 15,147,352.80 × 7,851,374.40
  4. Step 4: Simplify right side
    10,112,980.80x = 118,927,538,001,688.33
  5. Step 5: Solve for x
    x = 118,927,538,001,688.33/10,112,980.80
  6. Step 6: Final answer
    x = 11,759,889.63

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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.