Home / 21,312.42-29,409.36-12,357.06

Finding the Fourth Proportional to 21,312.42, 29,409.36 and 12,357.06

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Solution

The fourth proportional to 21,312.42, 29,409.36 and 12,357.06 is: 17,051.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.42 : 29,409.36 = 12,357.06 : x
  2. Step 2: Convert to fraction form
    21,312.42/29,409.36 = 12,357.06/x
  3. Step 3: Cross multiply
    21,312.42x = 29,409.36 × 12,357.06
  4. Step 4: Simplify right side
    21,312.42x = 363,413,226.08
  5. Step 5: Solve for x
    x = 363,413,226.08/21,312.42
  6. Step 6: Final answer
    x = 17,051.71

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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.