Home / 28,483.57-39,309.63-15,737.87

Finding the Fourth Proportional to 28,483.57, 39,309.63 and 15,737.87

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Solution

The fourth proportional to 28,483.57, 39,309.63 and 15,737.87 is: 21,719.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,483.57 : 39,309.63 = 15,737.87 : x
  2. Step 2: Convert to fraction form
    28,483.57/39,309.63 = 15,737.87/x
  3. Step 3: Cross multiply
    28,483.57x = 39,309.63 × 15,737.87
  4. Step 4: Simplify right side
    28,483.57x = 618,649,846.69
  5. Step 5: Solve for x
    x = 618,649,846.69/28,483.57
  6. Step 6: Final answer
    x = 21,719.53

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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.