Home / 21,136.67-29,166.49-12,637.10

Finding the Fourth Proportional to 21,136.67, 29,166.49 and 12,637.10

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Solution

The fourth proportional to 21,136.67, 29,166.49 and 12,637.10 is: 17,437.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.67 : 29,166.49 = 12,637.10 : x
  2. Step 2: Convert to fraction form
    21,136.67/29,166.49 = 12,637.10/x
  3. Step 3: Cross multiply
    21,136.67x = 29,166.49 × 12,637.10
  4. Step 4: Simplify right side
    21,136.67x = 368,579,916.25
  5. Step 5: Solve for x
    x = 368,579,916.25/21,136.67
  6. Step 6: Final answer
    x = 17,437.94

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1.5x scale

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.