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Finding the Fourth Proportional to 28,990.64, 40,026.27 and 22,264.20

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Solution

The fourth proportional to 28,990.64, 40,026.27 and 22,264.20 is: 30,739.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990.64 : 40,026.27 = 22,264.20 : x
  2. Step 2: Convert to fraction form
    28,990.64/40,026.27 = 22,264.20/x
  3. Step 3: Cross multiply
    28,990.64x = 40,026.27 × 22,264.20
  4. Step 4: Simplify right side
    28,990.64x = 891,152,880.53
  5. Step 5: Solve for x
    x = 891,152,880.53/28,990.64
  6. Step 6: Final answer
    x = 30,739.33

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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.