Home / 21,616,320.70-29,827,576.48-12,912,645.72

Finding the Fourth Proportional to 21,616,320.70, 29,827,576.48 and 12,912,645.72

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Solution

The fourth proportional to 21,616,320.70, 29,827,576.48 and 12,912,645.72 is: 17,817,691.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,616,320.70 : 29,827,576.48 = 12,912,645.72 : x
  2. Step 2: Convert to fraction form
    21,616,320.70/29,827,576.48 = 12,912,645.72/x
  3. Step 3: Cross multiply
    21,616,320.70x = 29,827,576.48 × 12,912,645.72
  4. Step 4: Simplify right side
    21,616,320.70x = 385,152,927,772,444.69
  5. Step 5: Solve for x
    x = 385,152,927,772,444.69/21,616,320.70
  6. Step 6: Final answer
    x = 17,817,691.23

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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.