Home / 16,218.36-22,390.86-10,639.08

Finding the Fourth Proportional to 16,218.36, 22,390.86 and 10,639.08

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Solution

The fourth proportional to 16,218.36, 22,390.86 and 10,639.08 is: 14,688.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,218.36 : 22,390.86 = 10,639.08 : x
  2. Step 2: Convert to fraction form
    16,218.36/22,390.86 = 10,639.08/x
  3. Step 3: Cross multiply
    16,218.36x = 22,390.86 × 10,639.08
  4. Step 4: Simplify right side
    16,218.36x = 238,218,150.81
  5. Step 5: Solve for x
    x = 238,218,150.81/16,218.36
  6. Step 6: Final answer
    x = 14,688.18

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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.