Home / 28,239.36-42,359.04-9,772.80

Finding the Fourth Proportional to 28,239.36, 42,359.04 and 9,772.80

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Solution

The fourth proportional to 28,239.36, 42,359.04 and 9,772.80 is: 14,659.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,239.36 : 42,359.04 = 9,772.80 : x
  2. Step 2: Convert to fraction form
    28,239.36/42,359.04 = 9,772.80/x
  3. Step 3: Cross multiply
    28,239.36x = 42,359.04 × 9,772.80
  4. Step 4: Simplify right side
    28,239.36x = 413,966,426.11
  5. Step 5: Solve for x
    x = 413,966,426.11/28,239.36
  6. Step 6: Final answer
    x = 14,659.20

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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.