Home / 28,436.02-39,242.55-15,860.50

Finding the Fourth Proportional to 28,436.02, 39,242.55 and 15,860.50

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Solution

The fourth proportional to 28,436.02, 39,242.55 and 15,860.50 is: 21,887.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,436.02 : 39,242.55 = 15,860.50 : x
  2. Step 2: Convert to fraction form
    28,436.02/39,242.55 = 15,860.50/x
  3. Step 3: Cross multiply
    28,436.02x = 39,242.55 × 15,860.50
  4. Step 4: Simplify right side
    28,436.02x = 622,406,464.28
  5. Step 5: Solve for x
    x = 622,406,464.28/28,436.02
  6. Step 6: Final answer
    x = 21,887.96

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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.