Home / 28,455.38-42,683.08-10,915.64

Finding the Fourth Proportional to 28,455.38, 42,683.08 and 10,915.64

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Solution

The fourth proportional to 28,455.38, 42,683.08 and 10,915.64 is: 16,373.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,455.38 : 42,683.08 = 10,915.64 : x
  2. Step 2: Convert to fraction form
    28,455.38/42,683.08 = 10,915.64/x
  3. Step 3: Cross multiply
    28,455.38x = 42,683.08 × 10,915.64
  4. Step 4: Simplify right side
    28,455.38x = 465,913,135.37
  5. Step 5: Solve for x
    x = 465,913,135.37/28,455.38
  6. Step 6: Final answer
    x = 16,373.46

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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.