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Finding the Fourth Proportional to 28,598.50, 39,465.93 and 17,420.50

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Solution

The fourth proportional to 28,598.50, 39,465.93 and 17,420.50 is: 24,040.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,598.50 : 39,465.93 = 17,420.50 : x
  2. Step 2: Convert to fraction form
    28,598.50/39,465.93 = 17,420.50/x
  3. Step 3: Cross multiply
    28,598.50x = 39,465.93 × 17,420.50
  4. Step 4: Simplify right side
    28,598.50x = 687,516,233.57
  5. Step 5: Solve for x
    x = 687,516,233.57/28,598.50
  6. Step 6: Final answer
    x = 24,040.29

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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.