Home / 28,543.27-39,389.09-15,622.48

Finding the Fourth Proportional to 28,543.27, 39,389.09 and 15,622.48

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Solution

The fourth proportional to 28,543.27, 39,389.09 and 15,622.48 is: 21,558.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.27 : 39,389.09 = 15,622.48 : x
  2. Step 2: Convert to fraction form
    28,543.27/39,389.09 = 15,622.48/x
  3. Step 3: Cross multiply
    28,543.27x = 39,389.09 × 15,622.48
  4. Step 4: Simplify right side
    28,543.27x = 615,355,094.16
  5. Step 5: Solve for x
    x = 615,355,094.16/28,543.27
  6. Step 6: Final answer
    x = 21,558.68

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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.