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Finding the Fourth Proportional to 28,342.70, 42,477.60 and 17,237.60

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Solution

The fourth proportional to 28,342.70, 42,477.60 and 17,237.60 is: 25,834.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,342.70 : 42,477.60 = 17,237.60 : x
  2. Step 2: Convert to fraction form
    28,342.70/42,477.60 = 17,237.60/x
  3. Step 3: Cross multiply
    28,342.70x = 42,477.60 × 17,237.60
  4. Step 4: Simplify right side
    28,342.70x = 732,211,877.76
  5. Step 5: Solve for x
    x = 732,211,877.76/28,342.70
  6. Step 6: Final answer
    x = 25,834.23

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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.