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Finding the Fourth Proportional to 35,481, 53,215.38 and 10,520.76

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Solution

The fourth proportional to 35,481, 53,215.38 and 10,520.76 is: 15,779.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,481 : 53,215.38 = 10,520.76 : x
  2. Step 2: Convert to fraction form
    35,481/53,215.38 = 10,520.76/x
  3. Step 3: Cross multiply
    35,481x = 53,215.38 × 10,520.76
  4. Step 4: Simplify right side
    35,481x = 559,866,241.29
  5. Step 5: Solve for x
    x = 559,866,241.29/35,481
  6. Step 6: Final answer
    x = 15,779.33

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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.