Home / 13,935.85-20,903.52-5,615.63

Finding the Fourth Proportional to 13,935.85, 20,903.52 and 5,615.63

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Solution

The fourth proportional to 13,935.85, 20,903.52 and 5,615.63 is: 8,423.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,935.85 : 20,903.52 = 5,615.63 : x
  2. Step 2: Convert to fraction form
    13,935.85/20,903.52 = 5,615.63/x
  3. Step 3: Cross multiply
    13,935.85x = 20,903.52 × 5,615.63
  4. Step 4: Simplify right side
    13,935.85x = 117,386,434.02
  5. Step 5: Solve for x
    x = 117,386,434.02/13,935.85
  6. Step 6: Final answer
    x = 8,423.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.