Home / 21,435.26-29,582.46-12,485.57

Finding the Fourth Proportional to 21,435.26, 29,582.46 and 12,485.57

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Solution

The fourth proportional to 21,435.26, 29,582.46 and 12,485.57 is: 17,231.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,435.26 : 29,582.46 = 12,485.57 : x
  2. Step 2: Convert to fraction form
    21,435.26/29,582.46 = 12,485.57/x
  3. Step 3: Cross multiply
    21,435.26x = 29,582.46 × 12,485.57
  4. Step 4: Simplify right side
    21,435.26x = 369,353,727.19
  5. Step 5: Solve for x
    x = 369,353,727.19/21,435.26
  6. Step 6: Final answer
    x = 17,231.13

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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.