Home / 21,916.42-30,244.21-12,356.32

Finding the Fourth Proportional to 21,916.42, 30,244.21 and 12,356.32

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Solution

The fourth proportional to 21,916.42, 30,244.21 and 12,356.32 is: 17,051.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,916.42 : 30,244.21 = 12,356.32 : x
  2. Step 2: Convert to fraction form
    21,916.42/30,244.21 = 12,356.32/x
  3. Step 3: Cross multiply
    21,916.42x = 30,244.21 × 12,356.32
  4. Step 4: Simplify right side
    21,916.42x = 373,707,136.91
  5. Step 5: Solve for x
    x = 373,707,136.91/21,916.42
  6. Step 6: Final answer
    x = 17,051.47

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Double scale
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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.