Home / 14,220.90-21,226.02-13,345.38

Finding the Fourth Proportional to 14,220.90, 21,226.02 and 13,345.38

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Solution

The fourth proportional to 14,220.90, 21,226.02 and 13,345.38 is: 19,919.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,220.90 : 21,226.02 = 13,345.38 : x
  2. Step 2: Convert to fraction form
    14,220.90/21,226.02 = 13,345.38/x
  3. Step 3: Cross multiply
    14,220.90x = 21,226.02 × 13,345.38
  4. Step 4: Simplify right side
    14,220.90x = 283,269,302.79
  5. Step 5: Solve for x
    x = 283,269,302.79/14,220.90
  6. Step 6: Final answer
    x = 19,919.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.