Home / 20,602.17-28,427.63-13,537.35

Finding the Fourth Proportional to 20,602.17, 28,427.63 and 13,537.35

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Solution

The fourth proportional to 20,602.17, 28,427.63 and 13,537.35 is: 18,679.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,602.17 : 28,427.63 = 13,537.35 : x
  2. Step 2: Convert to fraction form
    20,602.17/28,427.63 = 13,537.35/x
  3. Step 3: Cross multiply
    20,602.17x = 28,427.63 × 13,537.35
  4. Step 4: Simplify right side
    20,602.17x = 384,834,709.29
  5. Step 5: Solve for x
    x = 384,834,709.29/20,602.17
  6. Step 6: Final answer
    x = 18,679.33

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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.