Home / 30,861.50-42,577.13-22,814.47

Finding the Fourth Proportional to 30,861.50, 42,577.13 and 22,814.47

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Solution

The fourth proportional to 30,861.50, 42,577.13 and 22,814.47 is: 31,475.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,861.50 : 42,577.13 = 22,814.47 : x
  2. Step 2: Convert to fraction form
    30,861.50/42,577.13 = 22,814.47/x
  3. Step 3: Cross multiply
    30,861.50x = 42,577.13 × 22,814.47
  4. Step 4: Simplify right side
    30,861.50x = 971,374,655.07
  5. Step 5: Solve for x
    x = 971,374,655.07/30,861.50
  6. Step 6: Final answer
    x = 31,475.29

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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.