Home / 28,569.56-42,861.15-11,920.34

Finding the Fourth Proportional to 28,569.56, 42,861.15 and 11,920.34

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Solution

The fourth proportional to 28,569.56, 42,861.15 and 11,920.34 is: 17,883.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,569.56 : 42,861.15 = 11,920.34 : x
  2. Step 2: Convert to fraction form
    28,569.56/42,861.15 = 11,920.34/x
  3. Step 3: Cross multiply
    28,569.56x = 42,861.15 × 11,920.34
  4. Step 4: Simplify right side
    28,569.56x = 510,919,266.49
  5. Step 5: Solve for x
    x = 510,919,266.49/28,569.56
  6. Step 6: Final answer
    x = 17,883.35

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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.