Home / 29,289.78-40,420.02-15,861.18

Finding the Fourth Proportional to 29,289.78, 40,420.02 and 15,861.18

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Solution

The fourth proportional to 29,289.78, 40,420.02 and 15,861.18 is: 21,888.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,289.78 : 40,420.02 = 15,861.18 : x
  2. Step 2: Convert to fraction form
    29,289.78/40,420.02 = 15,861.18/x
  3. Step 3: Cross multiply
    29,289.78x = 40,420.02 × 15,861.18
  4. Step 4: Simplify right side
    29,289.78x = 641,109,212.82
  5. Step 5: Solve for x
    x = 641,109,212.82/29,289.78
  6. Step 6: Final answer
    x = 21,888.50

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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.