Home / 28,358.48-39,130.72-18,783.52

Finding the Fourth Proportional to 28,358.48, 39,130.72 and 18,783.52

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Solution

The fourth proportional to 28,358.48, 39,130.72 and 18,783.52 is: 25,918.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,358.48 : 39,130.72 = 18,783.52 : x
  2. Step 2: Convert to fraction form
    28,358.48/39,130.72 = 18,783.52/x
  3. Step 3: Cross multiply
    28,358.48x = 39,130.72 × 18,783.52
  4. Step 4: Simplify right side
    28,358.48x = 735,012,516.95
  5. Step 5: Solve for x
    x = 735,012,516.95/28,358.48
  6. Step 6: Final answer
    x = 25,918.61

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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.