Home / 28,231,156.72-42,329,653.26-12,666,135.16

Finding the Fourth Proportional to 28,231,156.72, 42,329,653.26 and 12,666,135.16

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Solution

The fourth proportional to 28,231,156.72, 42,329,653.26 and 12,666,135.16 is: 18,991,538.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,231,156.72 : 42,329,653.26 = 12,666,135.16 : x
  2. Step 2: Convert to fraction form
    28,231,156.72/42,329,653.26 = 12,666,135.16/x
  3. Step 3: Cross multiply
    28,231,156.72x = 42,329,653.26 × 12,666,135.16
  4. Step 4: Simplify right side
    28,231,156.72x = 536,153,109,467,094.62
  5. Step 5: Solve for x
    x = 536,153,109,467,094.62/28,231,156.72
  6. Step 6: Final answer
    x = 18,991,538.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.