Home / 14,931.78-20,606.81-8,880.37

Finding the Fourth Proportional to 14,931.78, 20,606.81 and 8,880.37

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Solution

The fourth proportional to 14,931.78, 20,606.81 and 8,880.37 is: 12,255.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,931.78 : 20,606.81 = 8,880.37 : x
  2. Step 2: Convert to fraction form
    14,931.78/20,606.81 = 8,880.37/x
  3. Step 3: Cross multiply
    14,931.78x = 20,606.81 × 8,880.37
  4. Step 4: Simplify right side
    14,931.78x = 182,996,001.40
  5. Step 5: Solve for x
    x = 182,996,001.40/14,931.78
  6. Step 6: Final answer
    x = 12,255.47

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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.