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Finding the Fourth Proportional to 35,437.20, 53,155.80 and 10,813.20

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Solution

The fourth proportional to 35,437.20, 53,155.80 and 10,813.20 is: 16,219.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,437.20 : 53,155.80 = 10,813.20 : x
  2. Step 2: Convert to fraction form
    35,437.20/53,155.80 = 10,813.20/x
  3. Step 3: Cross multiply
    35,437.20x = 53,155.80 × 10,813.20
  4. Step 4: Simplify right side
    35,437.20x = 574,784,296.56
  5. Step 5: Solve for x
    x = 574,784,296.56/35,437.20
  6. Step 6: Final answer
    x = 16,219.80

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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.