Home / 29,290.23-40,420.55-15,861.50

Finding the Fourth Proportional to 29,290.23, 40,420.55 and 15,861.50

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Solution

The fourth proportional to 29,290.23, 40,420.55 and 15,861.50 is: 21,888.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,290.23 : 40,420.55 = 15,861.50 : x
  2. Step 2: Convert to fraction form
    29,290.23/40,420.55 = 15,861.50/x
  3. Step 3: Cross multiply
    29,290.23x = 40,420.55 × 15,861.50
  4. Step 4: Simplify right side
    29,290.23x = 641,130,770.32
  5. Step 5: Solve for x
    x = 641,130,770.32/29,290.23
  6. Step 6: Final answer
    x = 21,888.90

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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.