Home / 28,981.18-39,994.32-16,403.50

Finding the Fourth Proportional to 28,981.18, 39,994.32 and 16,403.50

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Solution

The fourth proportional to 28,981.18, 39,994.32 and 16,403.50 is: 22,637.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,981.18 : 39,994.32 = 16,403.50 : x
  2. Step 2: Convert to fraction form
    28,981.18/39,994.32 = 16,403.50/x
  3. Step 3: Cross multiply
    28,981.18x = 39,994.32 × 16,403.50
  4. Step 4: Simplify right side
    28,981.18x = 656,046,828.12
  5. Step 5: Solve for x
    x = 656,046,828.12/28,981.18
  6. Step 6: Final answer
    x = 22,637.00

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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.