Home / 14,613.81-21,915.32-5,251.31

Finding the Fourth Proportional to 14,613.81, 21,915.32 and 5,251.31

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Solution

The fourth proportional to 14,613.81, 21,915.32 and 5,251.31 is: 7,875.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,613.81 : 21,915.32 = 5,251.31 : x
  2. Step 2: Convert to fraction form
    14,613.81/21,915.32 = 5,251.31/x
  3. Step 3: Cross multiply
    14,613.81x = 21,915.32 × 5,251.31
  4. Step 4: Simplify right side
    14,613.81x = 115,084,139.07
  5. Step 5: Solve for x
    x = 115,084,139.07/14,613.81
  6. Step 6: Final answer
    x = 7,875.03

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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.