Home / 28,163.48-38,865.02-15,416.35

Finding the Fourth Proportional to 28,163.48, 38,865.02 and 15,416.35

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Solution

The fourth proportional to 28,163.48, 38,865.02 and 15,416.35 is: 21,274.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,163.48 : 38,865.02 = 15,416.35 : x
  2. Step 2: Convert to fraction form
    28,163.48/38,865.02 = 15,416.35/x
  3. Step 3: Cross multiply
    28,163.48x = 38,865.02 × 15,416.35
  4. Step 4: Simplify right side
    28,163.48x = 599,156,674.00
  5. Step 5: Solve for x
    x = 599,156,674.00/28,163.48
  6. Step 6: Final answer
    x = 21,274.24

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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.