Home / 28,352.30-39,127.47-15,777.86

Finding the Fourth Proportional to 28,352.30, 39,127.47 and 15,777.86

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Solution

The fourth proportional to 28,352.30, 39,127.47 and 15,777.86 is: 21,774.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,352.30 : 39,127.47 = 15,777.86 : x
  2. Step 2: Convert to fraction form
    28,352.30/39,127.47 = 15,777.86/x
  3. Step 3: Cross multiply
    28,352.30x = 39,127.47 × 15,777.86
  4. Step 4: Simplify right side
    28,352.30x = 617,347,743.81
  5. Step 5: Solve for x
    x = 617,347,743.81/28,352.30
  6. Step 6: Final answer
    x = 21,774.17

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1.5x scale

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.