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Finding the Fourth Proportional to 12,951,968.80, 18,159,298.40 and 12,951,968.80

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Solution

The fourth proportional to 12,951,968.80, 18,159,298.40 and 12,951,968.80 is: 18,159,298.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,951,968.80 : 18,159,298.40 = 12,951,968.80 : x
  2. Step 2: Convert to fraction form
    12,951,968.80/18,159,298.40 = 12,951,968.80/x
  3. Step 3: Cross multiply
    12,951,968.80x = 18,159,298.40 × 12,951,968.80
  4. Step 4: Simplify right side
    12,951,968.80x = 235,198,666,306,689.91
  5. Step 5: Solve for x
    x = 235,198,666,306,689.91/12,951,968.80
  6. Step 6: Final answer
    x = 18,159,298.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.