Home / 15,329.42-21,153.90-9,371.06

Finding the Fourth Proportional to 15,329.42, 21,153.90 and 9,371.06

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Solution

The fourth proportional to 15,329.42, 21,153.90 and 9,371.06 is: 12,931.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,329.42 : 21,153.90 = 9,371.06 : x
  2. Step 2: Convert to fraction form
    15,329.42/21,153.90 = 9,371.06/x
  3. Step 3: Cross multiply
    15,329.42x = 21,153.90 × 9,371.06
  4. Step 4: Simplify right side
    15,329.42x = 198,234,466.13
  5. Step 5: Solve for x
    x = 198,234,466.13/15,329.42
  6. Step 6: Final answer
    x = 12,931.64

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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.