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Finding the Fourth Proportional to 15,606,005.20, 21,805,892 and 15,606,005.20

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Solution

The fourth proportional to 15,606,005.20, 21,805,892 and 15,606,005.20 is: 21,805,892

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,606,005.20 : 21,805,892 = 15,606,005.20 : x
  2. Step 2: Convert to fraction form
    15,606,005.20/21,805,892 = 15,606,005.20/x
  3. Step 3: Cross multiply
    15,606,005.20x = 21,805,892 × 15,606,005.20
  4. Step 4: Simplify right side
    15,606,005.20x = 340,302,863,942,638.38
  5. Step 5: Solve for x
    x = 340,302,863,942,638.38/15,606,005.20
  6. Step 6: Final answer
    x = 21,805,892

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.