Home / 21,124.86-29,152.48-11,693.40

Finding the Fourth Proportional to 21,124.86, 29,152.48 and 11,693.40

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Solution

The fourth proportional to 21,124.86, 29,152.48 and 11,693.40 is: 16,136.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124.86 : 29,152.48 = 11,693.40 : x
  2. Step 2: Convert to fraction form
    21,124.86/29,152.48 = 11,693.40/x
  3. Step 3: Cross multiply
    21,124.86x = 29,152.48 × 11,693.40
  4. Step 4: Simplify right side
    21,124.86x = 340,891,609.63
  5. Step 5: Solve for x
    x = 340,891,609.63/21,124.86
  6. Step 6: Final answer
    x = 16,136.99

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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.