Home / 20,756.48-31,117.32-9,060.80

Finding the Fourth Proportional to 20,756.48, 31,117.32 and 9,060.80

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Solution

The fourth proportional to 20,756.48, 31,117.32 and 9,060.80 is: 13,583.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756.48 : 31,117.32 = 9,060.80 : x
  2. Step 2: Convert to fraction form
    20,756.48/31,117.32 = 9,060.80/x
  3. Step 3: Cross multiply
    20,756.48x = 31,117.32 × 9,060.80
  4. Step 4: Simplify right side
    20,756.48x = 281,947,813.06
  5. Step 5: Solve for x
    x = 281,947,813.06/20,756.48
  6. Step 6: Final answer
    x = 13,583.60

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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.