Home / 13,128,191.80-19,688,856.12-3,903,680.20

Finding the Fourth Proportional to 13,128,191.80, 19,688,856.12 and 3,903,680.20

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Solution

The fourth proportional to 13,128,191.80, 19,688,856.12 and 3,903,680.20 is: 5,854,499.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128,191.80 : 19,688,856.12 = 3,903,680.20 : x
  2. Step 2: Convert to fraction form
    13,128,191.80/19,688,856.12 = 3,903,680.20/x
  3. Step 3: Cross multiply
    13,128,191.80x = 19,688,856.12 × 3,903,680.20
  4. Step 4: Simplify right side
    13,128,191.80x = 76,858,997,796,292.83
  5. Step 5: Solve for x
    x = 76,858,997,796,292.83/13,128,191.80
  6. Step 6: Final answer
    x = 5,854,499.92

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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.