Home / 20,572.24-30,870.70-8,885.45

Finding the Fourth Proportional to 20,572.24, 30,870.70 and 8,885.45

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Solution

The fourth proportional to 20,572.24, 30,870.70 and 8,885.45 is: 13,333.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,572.24 : 30,870.70 = 8,885.45 : x
  2. Step 2: Convert to fraction form
    20,572.24/30,870.70 = 8,885.45/x
  3. Step 3: Cross multiply
    20,572.24x = 30,870.70 × 8,885.45
  4. Step 4: Simplify right side
    20,572.24x = 274,300,061.32
  5. Step 5: Solve for x
    x = 274,300,061.32/20,572.24
  6. Step 6: Final answer
    x = 13,333.50

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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.