Home / 20,732,377.50-28,621,038.87-12,894,416.28

Finding the Fourth Proportional to 20,732,377.50, 28,621,038.87 and 12,894,416.28

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Solution

The fourth proportional to 20,732,377.50, 28,621,038.87 and 12,894,416.28 is: 17,800,736.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732,377.50 : 28,621,038.87 = 12,894,416.28 : x
  2. Step 2: Convert to fraction form
    20,732,377.50/28,621,038.87 = 12,894,416.28/x
  3. Step 3: Cross multiply
    20,732,377.50x = 28,621,038.87 × 12,894,416.28
  4. Step 4: Simplify right side
    20,732,377.50x = 369,051,589,555,840.81
  5. Step 5: Solve for x
    x = 369,051,589,555,840.81/20,732,377.50
  6. Step 6: Final answer
    x = 17,800,736.53

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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.