Home / 12,127,947.40-18,191,921.10-7,344,978.40

Finding the Fourth Proportional to 12,127,947.40, 18,191,921.10 and 7,344,978.40

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Solution

The fourth proportional to 12,127,947.40, 18,191,921.10 and 7,344,978.40 is: 11,017,467.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,947.40 : 18,191,921.10 = 7,344,978.40 : x
  2. Step 2: Convert to fraction form
    12,127,947.40/18,191,921.10 = 7,344,978.40/x
  3. Step 3: Cross multiply
    12,127,947.40x = 18,191,921.10 × 7,344,978.40
  4. Step 4: Simplify right side
    12,127,947.40x = 133,619,267,534,004.25
  5. Step 5: Solve for x
    x = 133,619,267,534,004.25/12,127,947.40
  6. Step 6: Final answer
    x = 11,017,467.60

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1.5x scale

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.