Home / 15,495.03-21,381.45-8,780.54

Finding the Fourth Proportional to 15,495.03, 21,381.45 and 8,780.54

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Solution

The fourth proportional to 15,495.03, 21,381.45 and 8,780.54 is: 12,116.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,495.03 : 21,381.45 = 8,780.54 : x
  2. Step 2: Convert to fraction form
    15,495.03/21,381.45 = 8,780.54/x
  3. Step 3: Cross multiply
    15,495.03x = 21,381.45 × 8,780.54
  4. Step 4: Simplify right side
    15,495.03x = 187,740,570.08
  5. Step 5: Solve for x
    x = 187,740,570.08/15,495.03
  6. Step 6: Final answer
    x = 12,116.18

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1.5x scale

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.