Home / 28,424.84-39,226.59-15,678.59

Finding the Fourth Proportional to 28,424.84, 39,226.59 and 15,678.59

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Solution

The fourth proportional to 28,424.84, 39,226.59 and 15,678.59 is: 21,636.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,424.84 : 39,226.59 = 15,678.59 : x
  2. Step 2: Convert to fraction form
    28,424.84/39,226.59 = 15,678.59/x
  3. Step 3: Cross multiply
    28,424.84x = 39,226.59 × 15,678.59
  4. Step 4: Simplify right side
    28,424.84x = 615,017,425.58
  5. Step 5: Solve for x
    x = 615,017,425.58/28,424.84
  6. Step 6: Final answer
    x = 21,636.62

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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.