Home / 20,812,832.53-31,208,491.79-9,136,424.95

Finding the Fourth Proportional to 20,812,832.53, 31,208,491.79 and 9,136,424.95

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Solution

The fourth proportional to 20,812,832.53, 31,208,491.79 and 9,136,424.95 is: 13,699,915.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,812,832.53 : 31,208,491.79 = 9,136,424.95 : x
  2. Step 2: Convert to fraction form
    20,812,832.53/31,208,491.79 = 9,136,424.95/x
  3. Step 3: Cross multiply
    20,812,832.53x = 31,208,491.79 × 9,136,424.95
  4. Step 4: Simplify right side
    20,812,832.53x = 285,134,043,064,867.19
  5. Step 5: Solve for x
    x = 285,134,043,064,867.19/20,812,832.53
  6. Step 6: Final answer
    x = 13,699,915.31

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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.