Home / 28,431.81-42,657.14-8,710.56

Finding the Fourth Proportional to 28,431.81, 42,657.14 and 8,710.56

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Solution

The fourth proportional to 28,431.81, 42,657.14 and 8,710.56 is: 13,068.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,431.81 : 42,657.14 = 8,710.56 : x
  2. Step 2: Convert to fraction form
    28,431.81/42,657.14 = 8,710.56/x
  3. Step 3: Cross multiply
    28,431.81x = 42,657.14 × 8,710.56
  4. Step 4: Simplify right side
    28,431.81x = 371,567,577.40
  5. Step 5: Solve for x
    x = 371,567,577.40/28,431.81
  6. Step 6: Final answer
    x = 13,068.73

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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.