Home / 20,533.07-28,333.53-15,158.36

Finding the Fourth Proportional to 20,533.07, 28,333.53 and 15,158.36

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Solution

The fourth proportional to 20,533.07, 28,333.53 and 15,158.36 is: 20,916.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,533.07 : 28,333.53 = 15,158.36 : x
  2. Step 2: Convert to fraction form
    20,533.07/28,333.53 = 15,158.36/x
  3. Step 3: Cross multiply
    20,533.07x = 28,333.53 × 15,158.36
  4. Step 4: Simplify right side
    20,533.07x = 429,489,847.81
  5. Step 5: Solve for x
    x = 429,489,847.81/20,533.07
  6. Step 6: Final answer
    x = 20,916.98

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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.