Home / 18,639.40-25,720.86-10,682.32

Finding the Fourth Proportional to 18,639.40, 25,720.86 and 10,682.32

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Solution

The fourth proportional to 18,639.40, 25,720.86 and 10,682.32 is: 14,740.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.40 : 25,720.86 = 10,682.32 : x
  2. Step 2: Convert to fraction form
    18,639.40/25,720.86 = 10,682.32/x
  3. Step 3: Cross multiply
    18,639.40x = 25,720.86 × 10,682.32
  4. Step 4: Simplify right side
    18,639.40x = 274,758,457.20
  5. Step 5: Solve for x
    x = 274,758,457.20/18,639.40
  6. Step 6: Final answer
    x = 14,740.74

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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.