Home / 19,214.40-28,821.60-12,981.45

Finding the Fourth Proportional to 19,214.40, 28,821.60 and 12,981.45

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Solution

The fourth proportional to 19,214.40, 28,821.60 and 12,981.45 is: 19,472.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,214.40 : 28,821.60 = 12,981.45 : x
  2. Step 2: Convert to fraction form
    19,214.40/28,821.60 = 12,981.45/x
  3. Step 3: Cross multiply
    19,214.40x = 28,821.60 × 12,981.45
  4. Step 4: Simplify right side
    19,214.40x = 374,146,159.32
  5. Step 5: Solve for x
    x = 374,146,159.32/19,214.40
  6. Step 6: Final answer
    x = 19,472.18

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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.