Home / 20,855,076.48-28,774,602-12,588,605.28

Finding the Fourth Proportional to 20,855,076.48, 28,774,602 and 12,588,605.28

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Solution

The fourth proportional to 20,855,076.48, 28,774,602 and 12,588,605.28 is: 17,369,013.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,855,076.48 : 28,774,602 = 12,588,605.28 : x
  2. Step 2: Convert to fraction form
    20,855,076.48/28,774,602 = 12,588,605.28/x
  3. Step 3: Cross multiply
    20,855,076.48x = 28,774,602 × 12,588,605.28
  4. Step 4: Simplify right side
    20,855,076.48x = 362,232,106,667,098.56
  5. Step 5: Solve for x
    x = 362,232,106,667,098.56/20,855,076.48
  6. Step 6: Final answer
    x = 17,369,013.58

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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.