Home / 15,128,005.52-20,878,396.64-8,423,013.44

Finding the Fourth Proportional to 15,128,005.52, 20,878,396.64 and 8,423,013.44

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Solution

The fourth proportional to 15,128,005.52, 20,878,396.64 and 8,423,013.44 is: 11,624,732.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,128,005.52 : 20,878,396.64 = 8,423,013.44 : x
  2. Step 2: Convert to fraction form
    15,128,005.52/20,878,396.64 = 8,423,013.44/x
  3. Step 3: Cross multiply
    15,128,005.52x = 20,878,396.64 × 8,423,013.44
  4. Step 4: Simplify right side
    15,128,005.52x = 175,859,015,357,863.81
  5. Step 5: Solve for x
    x = 175,859,015,357,863.81/15,128,005.52
  6. Step 6: Final answer
    x = 11,624,732.37

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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.