Home / 28,133.10-42,143.22-13,356.36

Finding the Fourth Proportional to 28,133.10, 42,143.22 and 13,356.36

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Solution

The fourth proportional to 28,133.10, 42,143.22 and 13,356.36 is: 20,007.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,133.10 : 42,143.22 = 13,356.36 : x
  2. Step 2: Convert to fraction form
    28,133.10/42,143.22 = 13,356.36/x
  3. Step 3: Cross multiply
    28,133.10x = 42,143.22 × 13,356.36
  4. Step 4: Simplify right side
    28,133.10x = 562,880,017.88
  5. Step 5: Solve for x
    x = 562,880,017.88/28,133.10
  6. Step 6: Final answer
    x = 20,007.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.