Home / 13,421,215.35-18,520,617.03-7,619,235.57

Finding the Fourth Proportional to 13,421,215.35, 18,520,617.03 and 7,619,235.57

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Solution

The fourth proportional to 13,421,215.35, 18,520,617.03 and 7,619,235.57 is: 10,514,170.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421,215.35 : 18,520,617.03 = 7,619,235.57 : x
  2. Step 2: Convert to fraction form
    13,421,215.35/18,520,617.03 = 7,619,235.57/x
  3. Step 3: Cross multiply
    13,421,215.35x = 18,520,617.03 × 7,619,235.57
  4. Step 4: Simplify right side
    13,421,215.35x = 141,112,944,053,323.78
  5. Step 5: Solve for x
    x = 141,112,944,053,323.78/13,421,215.35
  6. Step 6: Final answer
    x = 10,514,170.32

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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.