Home / 15,417.86-23,129.37-5,420.02

Finding the Fourth Proportional to 15,417.86, 23,129.37 and 5,420.02

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Solution

The fourth proportional to 15,417.86, 23,129.37 and 5,420.02 is: 8,130.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,417.86 : 23,129.37 = 5,420.02 : x
  2. Step 2: Convert to fraction form
    15,417.86/23,129.37 = 5,420.02/x
  3. Step 3: Cross multiply
    15,417.86x = 23,129.37 × 5,420.02
  4. Step 4: Simplify right side
    15,417.86x = 125,361,647.99
  5. Step 5: Solve for x
    x = 125,361,647.99/15,417.86
  6. Step 6: Final answer
    x = 8,130.94

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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.