Home / 14,810.31-20,438.36-8,436.81

Finding the Fourth Proportional to 14,810.31, 20,438.36 and 8,436.81

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Solution

The fourth proportional to 14,810.31, 20,438.36 and 8,436.81 is: 11,642.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,810.31 : 20,438.36 = 8,436.81 : x
  2. Step 2: Convert to fraction form
    14,810.31/20,438.36 = 8,436.81/x
  3. Step 3: Cross multiply
    14,810.31x = 20,438.36 × 8,436.81
  4. Step 4: Simplify right side
    14,810.31x = 172,434,581.12
  5. Step 5: Solve for x
    x = 172,434,581.12/14,810.31
  6. Step 6: Final answer
    x = 11,642.87

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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.