Home / 20,572.98-28,407.51-12,620.34

Finding the Fourth Proportional to 20,572.98, 28,407.51 and 12,620.34

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Solution

The fourth proportional to 20,572.98, 28,407.51 and 12,620.34 is: 17,426.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,572.98 : 28,407.51 = 12,620.34 : x
  2. Step 2: Convert to fraction form
    20,572.98/28,407.51 = 12,620.34/x
  3. Step 3: Cross multiply
    20,572.98x = 28,407.51 × 12,620.34
  4. Step 4: Simplify right side
    20,572.98x = 358,512,434.75
  5. Step 5: Solve for x
    x = 358,512,434.75/20,572.98
  6. Step 6: Final answer
    x = 17,426.37

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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.