Home / 28,426.04-39,228-15,851.60

Finding the Fourth Proportional to 28,426.04, 39,228 and 15,851.60

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Solution

The fourth proportional to 28,426.04, 39,228 and 15,851.60 is: 21,875.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,426.04 : 39,228 = 15,851.60 : x
  2. Step 2: Convert to fraction form
    28,426.04/39,228 = 15,851.60/x
  3. Step 3: Cross multiply
    28,426.04x = 39,228 × 15,851.60
  4. Step 4: Simplify right side
    28,426.04x = 621,826,564.80
  5. Step 5: Solve for x
    x = 621,826,564.80/28,426.04
  6. Step 6: Final answer
    x = 21,875.24

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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.