Home / 28,783.74-43,139.33-15,423.60

Finding the Fourth Proportional to 28,783.74, 43,139.33 and 15,423.60

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Solution

The fourth proportional to 28,783.74, 43,139.33 and 15,423.60 is: 23,115.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,783.74 : 43,139.33 = 15,423.60 : x
  2. Step 2: Convert to fraction form
    28,783.74/43,139.33 = 15,423.60/x
  3. Step 3: Cross multiply
    28,783.74x = 43,139.33 × 15,423.60
  4. Step 4: Simplify right side
    28,783.74x = 665,363,693.07
  5. Step 5: Solve for x
    x = 665,363,693.07/28,783.74
  6. Step 6: Final answer
    x = 23,115.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.