Home / 13,146,852.70-19,720,279.05-7,478,148.70

Finding the Fourth Proportional to 13,146,852.70, 19,720,279.05 and 7,478,148.70

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Solution

The fourth proportional to 13,146,852.70, 19,720,279.05 and 7,478,148.70 is: 11,217,223.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146,852.70 : 19,720,279.05 = 7,478,148.70 : x
  2. Step 2: Convert to fraction form
    13,146,852.70/19,720,279.05 = 7,478,148.70/x
  3. Step 3: Cross multiply
    13,146,852.70x = 19,720,279.05 × 7,478,148.70
  4. Step 4: Simplify right side
    13,146,852.70x = 147,471,179,141,394.75
  5. Step 5: Solve for x
    x = 147,471,179,141,394.75/13,146,852.70
  6. Step 6: Final answer
    x = 11,217,223.05

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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.