Home / 28,423.84-39,222.48-15,845.92

Finding the Fourth Proportional to 28,423.84, 39,222.48 and 15,845.92

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Solution

The fourth proportional to 28,423.84, 39,222.48 and 15,845.92 is: 21,866.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,423.84 : 39,222.48 = 15,845.92 : x
  2. Step 2: Convert to fraction form
    28,423.84/39,222.48 = 15,845.92/x
  3. Step 3: Cross multiply
    28,423.84x = 39,222.48 × 15,845.92
  4. Step 4: Simplify right side
    28,423.84x = 621,516,280.28
  5. Step 5: Solve for x
    x = 621,516,280.28/28,423.84
  6. Step 6: Final answer
    x = 21,866.02

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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.