Home / 21,538.47-29,709.63-14,812.44

Finding the Fourth Proportional to 21,538.47, 29,709.63 and 14,812.44

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Solution

The fourth proportional to 21,538.47, 29,709.63 and 14,812.44 is: 20,431.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,538.47 : 29,709.63 = 14,812.44 : x
  2. Step 2: Convert to fraction form
    21,538.47/29,709.63 = 14,812.44/x
  3. Step 3: Cross multiply
    21,538.47x = 29,709.63 × 14,812.44
  4. Step 4: Simplify right side
    21,538.47x = 440,072,111.80
  5. Step 5: Solve for x
    x = 440,072,111.80/21,538.47
  6. Step 6: Final answer
    x = 20,431.91

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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.