Home / 21,030.86-31,553.12-14,039.29

Finding the Fourth Proportional to 21,030.86, 31,553.12 and 14,039.29

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Solution

The fourth proportional to 21,030.86, 31,553.12 and 14,039.29 is: 21,063.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,030.86 : 31,553.12 = 14,039.29 : x
  2. Step 2: Convert to fraction form
    21,030.86/31,553.12 = 14,039.29/x
  3. Step 3: Cross multiply
    21,030.86x = 31,553.12 × 14,039.29
  4. Step 4: Simplify right side
    21,030.86x = 442,983,402.08
  5. Step 5: Solve for x
    x = 442,983,402.08/21,030.86
  6. Step 6: Final answer
    x = 21,063.49

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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.