Home / 20,675.63-31,001.70-14,109.77

Finding the Fourth Proportional to 20,675.63, 31,001.70 and 14,109.77

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Solution

The fourth proportional to 20,675.63, 31,001.70 and 14,109.77 is: 21,156.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675.63 : 31,001.70 = 14,109.77 : x
  2. Step 2: Convert to fraction form
    20,675.63/31,001.70 = 14,109.77/x
  3. Step 3: Cross multiply
    20,675.63x = 31,001.70 × 14,109.77
  4. Step 4: Simplify right side
    20,675.63x = 437,426,856.61
  5. Step 5: Solve for x
    x = 437,426,856.61/20,675.63
  6. Step 6: Final answer
    x = 21,156.64

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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.