Home / 28,242,307.80-38,972,245.85-15,850,007.87

Finding the Fourth Proportional to 28,242,307.80, 38,972,245.85 and 15,850,007.87

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Solution

The fourth proportional to 28,242,307.80, 38,972,245.85 and 15,850,007.87 is: 21,871,810.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,242,307.80 : 38,972,245.85 = 15,850,007.87 : x
  2. Step 2: Convert to fraction form
    28,242,307.80/38,972,245.85 = 15,850,007.87/x
  3. Step 3: Cross multiply
    28,242,307.80x = 38,972,245.85 × 15,850,007.87
  4. Step 4: Simplify right side
    28,242,307.80x = 617,710,403,434,074.88
  5. Step 5: Solve for x
    x = 617,710,403,434,074.88/28,242,307.80
  6. Step 6: Final answer
    x = 21,871,810.47

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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.