Home / 21,555.48-32,322.81-7,515.18

Finding the Fourth Proportional to 21,555.48, 32,322.81 and 7,515.18

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Solution

The fourth proportional to 21,555.48, 32,322.81 and 7,515.18 is: 11,269.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,555.48 : 32,322.81 = 7,515.18 : x
  2. Step 2: Convert to fraction form
    21,555.48/32,322.81 = 7,515.18/x
  3. Step 3: Cross multiply
    21,555.48x = 32,322.81 × 7,515.18
  4. Step 4: Simplify right side
    21,555.48x = 242,911,763.44
  5. Step 5: Solve for x
    x = 242,911,763.44/21,555.48
  6. Step 6: Final answer
    x = 11,269.14

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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.