Home / 28,403.76-39,166.42-19,335

Finding the Fourth Proportional to 28,403.76, 39,166.42 and 19,335

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Solution

The fourth proportional to 28,403.76, 39,166.42 and 19,335 is: 26,661.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,403.76 : 39,166.42 = 19,335 : x
  2. Step 2: Convert to fraction form
    28,403.76/39,166.42 = 19,335/x
  3. Step 3: Cross multiply
    28,403.76x = 39,166.42 × 19,335
  4. Step 4: Simplify right side
    28,403.76x = 757,282,730.70
  5. Step 5: Solve for x
    x = 757,282,730.70/28,403.76
  6. Step 6: Final answer
    x = 26,661.36

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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.