Home / 22,887.81-31,581.63-12,816.68

Finding the Fourth Proportional to 22,887.81, 31,581.63 and 12,816.68

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Solution

The fourth proportional to 22,887.81, 31,581.63 and 12,816.68 is: 17,685.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,887.81 : 31,581.63 = 12,816.68 : x
  2. Step 2: Convert to fraction form
    22,887.81/31,581.63 = 12,816.68/x
  3. Step 3: Cross multiply
    22,887.81x = 31,581.63 × 12,816.68
  4. Step 4: Simplify right side
    22,887.81x = 404,771,487.68
  5. Step 5: Solve for x
    x = 404,771,487.68/22,887.81
  6. Step 6: Final answer
    x = 17,685.02

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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.