Home / 12,112,688.40-18,144,538.20-7,549,731.60

Finding the Fourth Proportional to 12,112,688.40, 18,144,538.20 and 7,549,731.60

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Solution

The fourth proportional to 12,112,688.40, 18,144,538.20 and 7,549,731.60 is: 11,309,330.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112,688.40 : 18,144,538.20 = 7,549,731.60 : x
  2. Step 2: Convert to fraction form
    12,112,688.40/18,144,538.20 = 7,549,731.60/x
  3. Step 3: Cross multiply
    12,112,688.40x = 18,144,538.20 × 7,549,731.60
  4. Step 4: Simplify right side
    12,112,688.40x = 136,986,393,415,947.11
  5. Step 5: Solve for x
    x = 136,986,393,415,947.11/12,112,688.40
  6. Step 6: Final answer
    x = 11,309,330.26

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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.