Home / 28,156.79-38,852.06-16,217.80

Finding the Fourth Proportional to 28,156.79, 38,852.06 and 16,217.80

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Solution

The fourth proportional to 28,156.79, 38,852.06 and 16,217.80 is: 22,378.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,156.79 : 38,852.06 = 16,217.80 : x
  2. Step 2: Convert to fraction form
    28,156.79/38,852.06 = 16,217.80/x
  3. Step 3: Cross multiply
    28,156.79x = 38,852.06 × 16,217.80
  4. Step 4: Simplify right side
    28,156.79x = 630,094,760.45
  5. Step 5: Solve for x
    x = 630,094,760.45/28,156.79
  6. Step 6: Final answer
    x = 22,378.07

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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.