Home / 15,783.13-23,678.60-4,689.78

Finding the Fourth Proportional to 15,783.13, 23,678.60 and 4,689.78

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Solution

The fourth proportional to 15,783.13, 23,678.60 and 4,689.78 is: 7,035.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,783.13 : 23,678.60 = 4,689.78 : x
  2. Step 2: Convert to fraction form
    15,783.13/23,678.60 = 4,689.78/x
  3. Step 3: Cross multiply
    15,783.13x = 23,678.60 × 4,689.78
  4. Step 4: Simplify right side
    15,783.13x = 111,047,360.36
  5. Step 5: Solve for x
    x = 111,047,360.36/15,783.13
  6. Step 6: Final answer
    x = 7,035.82

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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.