Home / 13,187,106.60-19,780,659.90-11,885,404.20

Finding the Fourth Proportional to 13,187,106.60, 19,780,659.90 and 11,885,404.20

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Solution

The fourth proportional to 13,187,106.60, 19,780,659.90 and 11,885,404.20 is: 17,828,106.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187,106.60 : 19,780,659.90 = 11,885,404.20 : x
  2. Step 2: Convert to fraction form
    13,187,106.60/19,780,659.90 = 11,885,404.20/x
  3. Step 3: Cross multiply
    13,187,106.60x = 19,780,659.90 × 11,885,404.20
  4. Step 4: Simplify right side
    13,187,106.60x = 235,101,138,254,231.56
  5. Step 5: Solve for x
    x = 235,101,138,254,231.56/13,187,106.60
  6. Step 6: Final answer
    x = 17,828,106.30

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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.