Home / 28,426.56-39,228.96-15,851.52

Finding the Fourth Proportional to 28,426.56, 39,228.96 and 15,851.52

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Solution

The fourth proportional to 28,426.56, 39,228.96 and 15,851.52 is: 21,875.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,426.56 : 39,228.96 = 15,851.52 : x
  2. Step 2: Convert to fraction form
    28,426.56/39,228.96 = 15,851.52/x
  3. Step 3: Cross multiply
    28,426.56x = 39,228.96 × 15,851.52
  4. Step 4: Simplify right side
    28,426.56x = 621,838,644.02
  5. Step 5: Solve for x
    x = 621,838,644.02/28,426.56
  6. Step 6: Final answer
    x = 21,875.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.