Home / 28,435.23-42,660.40-9,715.23

Finding the Fourth Proportional to 28,435.23, 42,660.40 and 9,715.23

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Solution

The fourth proportional to 28,435.23, 42,660.40 and 9,715.23 is: 14,575.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,435.23 : 42,660.40 = 9,715.23 : x
  2. Step 2: Convert to fraction form
    28,435.23/42,660.40 = 9,715.23/x
  3. Step 3: Cross multiply
    28,435.23x = 42,660.40 × 9,715.23
  4. Step 4: Simplify right side
    28,435.23x = 414,455,597.89
  5. Step 5: Solve for x
    x = 414,455,597.89/28,435.23
  6. Step 6: Final answer
    x = 14,575.43

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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.