Home / 28,423.64-39,224.09-15,678.02

Finding the Fourth Proportional to 28,423.64, 39,224.09 and 15,678.02

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Solution

The fourth proportional to 28,423.64, 39,224.09 and 15,678.02 is: 21,635.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,423.64 : 39,224.09 = 15,678.02 : x
  2. Step 2: Convert to fraction form
    28,423.64/39,224.09 = 15,678.02/x
  3. Step 3: Cross multiply
    28,423.64x = 39,224.09 × 15,678.02
  4. Step 4: Simplify right side
    28,423.64x = 614,955,910.58
  5. Step 5: Solve for x
    x = 614,955,910.58/28,423.64
  6. Step 6: Final answer
    x = 21,635.37

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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.