Home / 21,984.04-30,337.34-12,909.26

Finding the Fourth Proportional to 21,984.04, 30,337.34 and 12,909.26

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Solution

The fourth proportional to 21,984.04, 30,337.34 and 12,909.26 is: 17,814.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,984.04 : 30,337.34 = 12,909.26 : x
  2. Step 2: Convert to fraction form
    21,984.04/30,337.34 = 12,909.26/x
  3. Step 3: Cross multiply
    21,984.04x = 30,337.34 × 12,909.26
  4. Step 4: Simplify right side
    21,984.04x = 391,632,609.77
  5. Step 5: Solve for x
    x = 391,632,609.77/21,984.04
  6. Step 6: Final answer
    x = 17,814.41

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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.