Home / 20,535.56-30,774.60-15,533.72

Finding the Fourth Proportional to 20,535.56, 30,774.60 and 15,533.72

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Solution

The fourth proportional to 20,535.56, 30,774.60 and 15,533.72 is: 23,278.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535.56 : 30,774.60 = 15,533.72 : x
  2. Step 2: Convert to fraction form
    20,535.56/30,774.60 = 15,533.72/x
  3. Step 3: Cross multiply
    20,535.56x = 30,774.60 × 15,533.72
  4. Step 4: Simplify right side
    20,535.56x = 478,044,019.51
  5. Step 5: Solve for x
    x = 478,044,019.51/20,535.56
  6. Step 6: Final answer
    x = 23,278.84

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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.