Home / 21,438.48-29,582.44-12,005.52

Finding the Fourth Proportional to 21,438.48, 29,582.44 and 12,005.52

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Solution

The fourth proportional to 21,438.48, 29,582.44 and 12,005.52 is: 16,566.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.48 : 29,582.44 = 12,005.52 : x
  2. Step 2: Convert to fraction form
    21,438.48/29,582.44 = 12,005.52/x
  3. Step 3: Cross multiply
    21,438.48x = 29,582.44 × 12,005.52
  4. Step 4: Simplify right side
    21,438.48x = 355,152,575.07
  5. Step 5: Solve for x
    x = 355,152,575.07/21,438.48
  6. Step 6: Final answer
    x = 16,566.13

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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.