Home / 13,239,984-18,271,742.36-7,438,776.96

Finding the Fourth Proportional to 13,239,984, 18,271,742.36 and 7,438,776.96

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Solution

The fourth proportional to 13,239,984, 18,271,742.36 and 7,438,776.96 is: 10,265,829.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239,984 : 18,271,742.36 = 7,438,776.96 : x
  2. Step 2: Convert to fraction form
    13,239,984/18,271,742.36 = 7,438,776.96/x
  3. Step 3: Cross multiply
    13,239,984x = 18,271,742.36 × 7,438,776.96
  4. Step 4: Simplify right side
    13,239,984x = 135,919,416,086,624.02
  5. Step 5: Solve for x
    x = 135,919,416,086,624.02/13,239,984
  6. Step 6: Final answer
    x = 10,265,829.33

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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.