Home / 28,875,856-39,848,681.28-15,998,800

Finding the Fourth Proportional to 28,875,856, 39,848,681.28 and 15,998,800

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Solution

The fourth proportional to 28,875,856, 39,848,681.28 and 15,998,800 is: 22,078,344

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,875,856 : 39,848,681.28 = 15,998,800 : x
  2. Step 2: Convert to fraction form
    28,875,856/39,848,681.28 = 15,998,800/x
  3. Step 3: Cross multiply
    28,875,856x = 39,848,681.28 × 15,998,800
  4. Step 4: Simplify right side
    28,875,856x = 637,531,082,062,464
  5. Step 5: Solve for x
    x = 637,531,082,062,464/28,875,856
  6. Step 6: Final answer
    x = 22,078,344

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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.