Home / 13,520,817.20-18,659,643.18-7,638,411.17

Finding the Fourth Proportional to 13,520,817.20, 18,659,643.18 and 7,638,411.17

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Solution

The fourth proportional to 13,520,817.20, 18,659,643.18 and 7,638,411.17 is: 10,541,524.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520,817.20 : 18,659,643.18 = 7,638,411.17 : x
  2. Step 2: Convert to fraction form
    13,520,817.20/18,659,643.18 = 7,638,411.17/x
  3. Step 3: Cross multiply
    13,520,817.20x = 18,659,643.18 × 7,638,411.17
  4. Step 4: Simplify right side
    13,520,817.20x = 142,530,026,955,297.47
  5. Step 5: Solve for x
    x = 142,530,026,955,297.47/13,520,817.20
  6. Step 6: Final answer
    x = 10,541,524.59

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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.