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Finding the Fourth Proportional to 28,952.64, 39,952.44 and 16,378.20

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Solution

The fourth proportional to 28,952.64, 39,952.44 and 16,378.20 is: 22,600.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,952.64 : 39,952.44 = 16,378.20 : x
  2. Step 2: Convert to fraction form
    28,952.64/39,952.44 = 16,378.20/x
  3. Step 3: Cross multiply
    28,952.64x = 39,952.44 × 16,378.20
  4. Step 4: Simplify right side
    28,952.64x = 654,349,052.81
  5. Step 5: Solve for x
    x = 654,349,052.81/28,952.64
  6. Step 6: Final answer
    x = 22,600.67

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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.