Home / 28,019.28-38,666.64-15,444

Finding the Fourth Proportional to 28,019.28, 38,666.64 and 15,444

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Solution

The fourth proportional to 28,019.28, 38,666.64 and 15,444 is: 21,312.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,019.28 : 38,666.64 = 15,444 : x
  2. Step 2: Convert to fraction form
    28,019.28/38,666.64 = 15,444/x
  3. Step 3: Cross multiply
    28,019.28x = 38,666.64 × 15,444
  4. Step 4: Simplify right side
    28,019.28x = 597,167,588.16
  5. Step 5: Solve for x
    x = 597,167,588.16/28,019.28
  6. Step 6: Final answer
    x = 21,312.74

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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.