Home / 20,710.80-31,038.48-7,550.76

Finding the Fourth Proportional to 20,710.80, 31,038.48 and 7,550.76

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Solution

The fourth proportional to 20,710.80, 31,038.48 and 7,550.76 is: 11,316.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.80 : 31,038.48 = 7,550.76 : x
  2. Step 2: Convert to fraction form
    20,710.80/31,038.48 = 7,550.76/x
  3. Step 3: Cross multiply
    20,710.80x = 31,038.48 × 7,550.76
  4. Step 4: Simplify right side
    20,710.80x = 234,364,113.24
  5. Step 5: Solve for x
    x = 234,364,113.24/20,710.80
  6. Step 6: Final answer
    x = 11,316.03

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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.