Home / 20,368.91-30,561.12-10,501.89

Finding the Fourth Proportional to 20,368.91, 30,561.12 and 10,501.89

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Solution

The fourth proportional to 20,368.91, 30,561.12 and 10,501.89 is: 15,756.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,368.91 : 30,561.12 = 10,501.89 : x
  2. Step 2: Convert to fraction form
    20,368.91/30,561.12 = 10,501.89/x
  3. Step 3: Cross multiply
    20,368.91x = 30,561.12 × 10,501.89
  4. Step 4: Simplify right side
    20,368.91x = 320,949,520.52
  5. Step 5: Solve for x
    x = 320,949,520.52/20,368.91
  6. Step 6: Final answer
    x = 15,756.84

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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.