Home / 20,442.77-30,642.28-10,572.11

Finding the Fourth Proportional to 20,442.77, 30,642.28 and 10,572.11

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Solution

The fourth proportional to 20,442.77, 30,642.28 and 10,572.11 is: 15,846.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442.77 : 30,642.28 = 10,572.11 : x
  2. Step 2: Convert to fraction form
    20,442.77/30,642.28 = 10,572.11/x
  3. Step 3: Cross multiply
    20,442.77x = 30,642.28 × 10,572.11
  4. Step 4: Simplify right side
    20,442.77x = 323,953,554.81
  5. Step 5: Solve for x
    x = 323,953,554.81/20,442.77
  6. Step 6: Final answer
    x = 15,846.85

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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.