Home / 20,966.76-31,430.70-9,273.60

Finding the Fourth Proportional to 20,966.76, 31,430.70 and 9,273.60

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Solution

The fourth proportional to 20,966.76, 31,430.70 and 9,273.60 is: 13,901.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.76 : 31,430.70 = 9,273.60 : x
  2. Step 2: Convert to fraction form
    20,966.76/31,430.70 = 9,273.60/x
  3. Step 3: Cross multiply
    20,966.76x = 31,430.70 × 9,273.60
  4. Step 4: Simplify right side
    20,966.76x = 291,475,739.52
  5. Step 5: Solve for x
    x = 291,475,739.52/20,966.76
  6. Step 6: Final answer
    x = 13,901.80

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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.