Home / 28,563,715.64-39,418,248.30-15,511,129.40

Finding the Fourth Proportional to 28,563,715.64, 39,418,248.30 and 15,511,129.40

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Solution

The fourth proportional to 28,563,715.64, 39,418,248.30 and 15,511,129.40 is: 21,405,532.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,563,715.64 : 39,418,248.30 = 15,511,129.40 : x
  2. Step 2: Convert to fraction form
    28,563,715.64/39,418,248.30 = 15,511,129.40/x
  3. Step 3: Cross multiply
    28,563,715.64x = 39,418,248.30 × 15,511,129.40
  4. Step 4: Simplify right side
    28,563,715.64x = 611,421,550,102,630
  5. Step 5: Solve for x
    x = 611,421,550,102,630/28,563,715.64
  6. Step 6: Final answer
    x = 21,405,532.73

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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.