Home / 15,409.36-21,265.32-9,126.64

Finding the Fourth Proportional to 15,409.36, 21,265.32 and 9,126.64

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Solution

The fourth proportional to 15,409.36, 21,265.32 and 9,126.64 is: 12,595.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,409.36 : 21,265.32 = 9,126.64 : x
  2. Step 2: Convert to fraction form
    15,409.36/21,265.32 = 9,126.64/x
  3. Step 3: Cross multiply
    15,409.36x = 21,265.32 × 9,126.64
  4. Step 4: Simplify right side
    15,409.36x = 194,080,920.12
  5. Step 5: Solve for x
    x = 194,080,920.12/15,409.36
  6. Step 6: Final answer
    x = 12,595.00

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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.