Home / 28,021.40-42,032.10-25,688.60

Finding the Fourth Proportional to 28,021.40, 42,032.10 and 25,688.60

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Solution

The fourth proportional to 28,021.40, 42,032.10 and 25,688.60 is: 38,532.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,021.40 : 42,032.10 = 25,688.60 : x
  2. Step 2: Convert to fraction form
    28,021.40/42,032.10 = 25,688.60/x
  3. Step 3: Cross multiply
    28,021.40x = 42,032.10 × 25,688.60
  4. Step 4: Simplify right side
    28,021.40x = 1,079,745,804.06
  5. Step 5: Solve for x
    x = 1,079,745,804.06/28,021.40
  6. Step 6: Final answer
    x = 38,532.90

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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.