Home / 28,012.48-42,004.40-9,285.76

Finding the Fourth Proportional to 28,012.48, 42,004.40 and 9,285.76

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Solution

The fourth proportional to 28,012.48, 42,004.40 and 9,285.76 is: 13,923.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,012.48 : 42,004.40 = 9,285.76 : x
  2. Step 2: Convert to fraction form
    28,012.48/42,004.40 = 9,285.76/x
  3. Step 3: Cross multiply
    28,012.48x = 42,004.40 × 9,285.76
  4. Step 4: Simplify right side
    28,012.48x = 390,042,777.34
  5. Step 5: Solve for x
    x = 390,042,777.34/28,012.48
  6. Step 6: Final answer
    x = 13,923.89

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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.