Home / 28,990.16-40,005.84-16,243.19

Finding the Fourth Proportional to 28,990.16, 40,005.84 and 16,243.19

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Solution

The fourth proportional to 28,990.16, 40,005.84 and 16,243.19 is: 22,415.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990.16 : 40,005.84 = 16,243.19 : x
  2. Step 2: Convert to fraction form
    28,990.16/40,005.84 = 16,243.19/x
  3. Step 3: Cross multiply
    28,990.16x = 40,005.84 × 16,243.19
  4. Step 4: Simplify right side
    28,990.16x = 649,822,621.16
  5. Step 5: Solve for x
    x = 649,822,621.16/28,990.16
  6. Step 6: Final answer
    x = 22,415.28

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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.