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Finding the Fourth Proportional to 28,606.40, 42,823.20 and 25,150.40

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Solution

The fourth proportional to 28,606.40, 42,823.20 and 25,150.40 is: 37,649.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,606.40 : 42,823.20 = 25,150.40 : x
  2. Step 2: Convert to fraction form
    28,606.40/42,823.20 = 25,150.40/x
  3. Step 3: Cross multiply
    28,606.40x = 42,823.20 × 25,150.40
  4. Step 4: Simplify right side
    28,606.40x = 1,077,020,609.28
  5. Step 5: Solve for x
    x = 1,077,020,609.28/28,606.40
  6. Step 6: Final answer
    x = 37,649.64

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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.