Home / 15,289.81-21,099.85-8,483.76

Finding the Fourth Proportional to 15,289.81, 21,099.85 and 8,483.76

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Solution

The fourth proportional to 15,289.81, 21,099.85 and 8,483.76 is: 11,707.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,289.81 : 21,099.85 = 8,483.76 : x
  2. Step 2: Convert to fraction form
    15,289.81/21,099.85 = 8,483.76/x
  3. Step 3: Cross multiply
    15,289.81x = 21,099.85 × 8,483.76
  4. Step 4: Simplify right side
    15,289.81x = 179,006,042.23
  5. Step 5: Solve for x
    x = 179,006,042.23/15,289.81
  6. Step 6: Final answer
    x = 11,707.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.