Home / 20,312.05-30,472.63-7,164.53

Finding the Fourth Proportional to 20,312.05, 30,472.63 and 7,164.53

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Solution

The fourth proportional to 20,312.05, 30,472.63 and 7,164.53 is: 10,748.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,312.05 : 30,472.63 = 7,164.53 : x
  2. Step 2: Convert to fraction form
    20,312.05/30,472.63 = 7,164.53/x
  3. Step 3: Cross multiply
    20,312.05x = 30,472.63 × 7,164.53
  4. Step 4: Simplify right side
    20,312.05x = 218,322,071.81
  5. Step 5: Solve for x
    x = 218,322,071.81/20,312.05
  6. Step 6: Final answer
    x = 10,748.40

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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.