Home / 20,574.12-30,680.52-20,387.01

Finding the Fourth Proportional to 20,574.12, 30,680.52 and 20,387.01

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Solution

The fourth proportional to 20,574.12, 30,680.52 and 20,387.01 is: 30,401.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,574.12 : 30,680.52 = 20,387.01 : x
  2. Step 2: Convert to fraction form
    20,574.12/30,680.52 = 20,387.01/x
  3. Step 3: Cross multiply
    20,574.12x = 30,680.52 × 20,387.01
  4. Step 4: Simplify right side
    20,574.12x = 625,484,068.05
  5. Step 5: Solve for x
    x = 625,484,068.05/20,574.12
  6. Step 6: Final answer
    x = 30,401.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.