Home / 30,598.87-42,220.83-20,541.91

Finding the Fourth Proportional to 30,598.87, 42,220.83 and 20,541.91

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Solution

The fourth proportional to 30,598.87, 42,220.83 and 20,541.91 is: 28,344.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,598.87 : 42,220.83 = 20,541.91 : x
  2. Step 2: Convert to fraction form
    30,598.87/42,220.83 = 20,541.91/x
  3. Step 3: Cross multiply
    30,598.87x = 42,220.83 × 20,541.91
  4. Step 4: Simplify right side
    30,598.87x = 867,296,489.99
  5. Step 5: Solve for x
    x = 867,296,489.99/30,598.87
  6. Step 6: Final answer
    x = 28,344.07

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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.