Home / 20,018.10-27,646.20-15,228.58

Finding the Fourth Proportional to 20,018.10, 27,646.20 and 15,228.58

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Solution

The fourth proportional to 20,018.10, 27,646.20 and 15,228.58 is: 21,031.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,018.10 : 27,646.20 = 15,228.58 : x
  2. Step 2: Convert to fraction form
    20,018.10/27,646.20 = 15,228.58/x
  3. Step 3: Cross multiply
    20,018.10x = 27,646.20 × 15,228.58
  4. Step 4: Simplify right side
    20,018.10x = 421,012,368.40
  5. Step 5: Solve for x
    x = 421,012,368.40/20,018.10
  6. Step 6: Final answer
    x = 21,031.58

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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.