Home / 11,621.31-16,050.47-9,000.42

Finding the Fourth Proportional to 11,621.31, 16,050.47 and 9,000.42

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Solution

The fourth proportional to 11,621.31, 16,050.47 and 9,000.42 is: 12,430.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,621.31 : 16,050.47 = 9,000.42 : x
  2. Step 2: Convert to fraction form
    11,621.31/16,050.47 = 9,000.42/x
  3. Step 3: Cross multiply
    11,621.31x = 16,050.47 × 9,000.42
  4. Step 4: Simplify right side
    11,621.31x = 144,460,971.20
  5. Step 5: Solve for x
    x = 144,460,971.20/11,621.31
  6. Step 6: Final answer
    x = 12,430.70

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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.