Home / 13,239,856.80-19,859,785.20-5,153,205.60

Finding the Fourth Proportional to 13,239,856.80, 19,859,785.20 and 5,153,205.60

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Solution

The fourth proportional to 13,239,856.80, 19,859,785.20 and 5,153,205.60 is: 7,729,808.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239,856.80 : 19,859,785.20 = 5,153,205.60 : x
  2. Step 2: Convert to fraction form
    13,239,856.80/19,859,785.20 = 5,153,205.60/x
  3. Step 3: Cross multiply
    13,239,856.80x = 19,859,785.20 × 5,153,205.60
  4. Step 4: Simplify right side
    13,239,856.80x = 102,341,556,307,437.11
  5. Step 5: Solve for x
    x = 102,341,556,307,437.11/13,239,856.80
  6. Step 6: Final answer
    x = 7,729,808.40

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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.