Home / 21,036.15-31,511.70-13,114.35

Finding the Fourth Proportional to 21,036.15, 31,511.70 and 13,114.35

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Solution

The fourth proportional to 21,036.15, 31,511.70 and 13,114.35 is: 19,645.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,036.15 : 31,511.70 = 13,114.35 : x
  2. Step 2: Convert to fraction form
    21,036.15/31,511.70 = 13,114.35/x
  3. Step 3: Cross multiply
    21,036.15x = 31,511.70 × 13,114.35
  4. Step 4: Simplify right side
    21,036.15x = 413,255,462.90
  5. Step 5: Solve for x
    x = 413,255,462.90/21,036.15
  6. Step 6: Final answer
    x = 19,645.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.