Home / 28,678.29-39,582.36-15,935.85

Finding the Fourth Proportional to 28,678.29, 39,582.36 and 15,935.85

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Solution

The fourth proportional to 28,678.29, 39,582.36 and 15,935.85 is: 21,994.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,678.29 : 39,582.36 = 15,935.85 : x
  2. Step 2: Convert to fraction form
    28,678.29/39,582.36 = 15,935.85/x
  3. Step 3: Cross multiply
    28,678.29x = 39,582.36 × 15,935.85
  4. Step 4: Simplify right side
    28,678.29x = 630,778,551.61
  5. Step 5: Solve for x
    x = 630,778,551.61/28,678.29
  6. Step 6: Final answer
    x = 21,994.98

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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.