Home / 15,810.72-21,816.48-9,435.84

Finding the Fourth Proportional to 15,810.72, 21,816.48 and 9,435.84

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Solution

The fourth proportional to 15,810.72, 21,816.48 and 9,435.84 is: 13,020.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,810.72 : 21,816.48 = 9,435.84 : x
  2. Step 2: Convert to fraction form
    15,810.72/21,816.48 = 9,435.84/x
  3. Step 3: Cross multiply
    15,810.72x = 21,816.48 × 9,435.84
  4. Step 4: Simplify right side
    15,810.72x = 205,856,814.64
  5. Step 5: Solve for x
    x = 205,856,814.64/15,810.72
  6. Step 6: Final answer
    x = 13,020.08

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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.