Home / 28,499.09-39,328.53-15,753.11

Finding the Fourth Proportional to 28,499.09, 39,328.53 and 15,753.11

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Solution

The fourth proportional to 28,499.09, 39,328.53 and 15,753.11 is: 21,739.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,499.09 : 39,328.53 = 15,753.11 : x
  2. Step 2: Convert to fraction form
    28,499.09/39,328.53 = 15,753.11/x
  3. Step 3: Cross multiply
    28,499.09x = 39,328.53 × 15,753.11
  4. Step 4: Simplify right side
    28,499.09x = 619,546,659.23
  5. Step 5: Solve for x
    x = 619,546,659.23/28,499.09
  6. Step 6: Final answer
    x = 21,739.17

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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.