Home / 12,915,599-17,819,979.90-8,990,956.76

Finding the Fourth Proportional to 12,915,599, 17,819,979.90 and 8,990,956.76

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Solution

The fourth proportional to 12,915,599, 17,819,979.90 and 8,990,956.76 is: 12,405,051.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,915,599 : 17,819,979.90 = 8,990,956.76 : x
  2. Step 2: Convert to fraction form
    12,915,599/17,819,979.90 = 8,990,956.76/x
  3. Step 3: Cross multiply
    12,915,599x = 17,819,979.90 × 8,990,956.76
  4. Step 4: Simplify right side
    12,915,599x = 160,218,668,744,969.09
  5. Step 5: Solve for x
    x = 160,218,668,744,969.09/12,915,599
  6. Step 6: Final answer
    x = 12,405,051.34

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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.