Home / 20,588.34-28,391.07-18,312.48

Finding the Fourth Proportional to 20,588.34, 28,391.07 and 18,312.48

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Solution

The fourth proportional to 20,588.34, 28,391.07 and 18,312.48 is: 25,252.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,588.34 : 28,391.07 = 18,312.48 : x
  2. Step 2: Convert to fraction form
    20,588.34/28,391.07 = 18,312.48/x
  3. Step 3: Cross multiply
    20,588.34x = 28,391.07 × 18,312.48
  4. Step 4: Simplify right side
    20,588.34x = 519,910,901.55
  5. Step 5: Solve for x
    x = 519,910,901.55/20,588.34
  6. Step 6: Final answer
    x = 25,252.69

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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.