Home / 13,935.68-20,903.28-5,615.49

Finding the Fourth Proportional to 13,935.68, 20,903.28 and 5,615.49

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Solution

The fourth proportional to 13,935.68, 20,903.28 and 5,615.49 is: 8,423.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,935.68 : 20,903.28 = 5,615.49 : x
  2. Step 2: Convert to fraction form
    13,935.68/20,903.28 = 5,615.49/x
  3. Step 3: Cross multiply
    13,935.68x = 20,903.28 × 5,615.49
  4. Step 4: Simplify right side
    13,935.68x = 117,382,159.81
  5. Step 5: Solve for x
    x = 117,382,159.81/13,935.68
  6. Step 6: Final answer
    x = 8,423.14

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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.