Home / 12,983,998.72-17,918,445.84-7,182,680.48

Finding the Fourth Proportional to 12,983,998.72, 17,918,445.84 and 7,182,680.48

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Solution

The fourth proportional to 12,983,998.72, 17,918,445.84 and 7,182,680.48 is: 9,912,390.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,983,998.72 : 17,918,445.84 = 7,182,680.48 : x
  2. Step 2: Convert to fraction form
    12,983,998.72/17,918,445.84 = 7,182,680.48/x
  3. Step 3: Cross multiply
    12,983,998.72x = 17,918,445.84 × 7,182,680.48
  4. Step 4: Simplify right side
    12,983,998.72x = 128,702,471,166,905.20
  5. Step 5: Solve for x
    x = 128,702,471,166,905.20/12,983,998.72
  6. Step 6: Final answer
    x = 9,912,390.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.