Home / 28,354.02-39,122.91-15,776.34

Finding the Fourth Proportional to 28,354.02, 39,122.91 and 15,776.34

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Solution

The fourth proportional to 28,354.02, 39,122.91 and 15,776.34 is: 21,768.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,354.02 : 39,122.91 = 15,776.34 : x
  2. Step 2: Convert to fraction form
    28,354.02/39,122.91 = 15,776.34/x
  3. Step 3: Cross multiply
    28,354.02x = 39,122.91 × 15,776.34
  4. Step 4: Simplify right side
    28,354.02x = 617,216,329.95
  5. Step 5: Solve for x
    x = 617,216,329.95/28,354.02
  6. Step 6: Final answer
    x = 21,768.21

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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.