Home / 19,088.49-28,612.76-6,428.78

Finding the Fourth Proportional to 19,088.49, 28,612.76 and 6,428.78

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Solution

The fourth proportional to 19,088.49, 28,612.76 and 6,428.78 is: 9,636.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,088.49 : 28,612.76 = 6,428.78 : x
  2. Step 2: Convert to fraction form
    19,088.49/28,612.76 = 6,428.78/x
  3. Step 3: Cross multiply
    19,088.49x = 28,612.76 × 6,428.78
  4. Step 4: Simplify right side
    19,088.49x = 183,944,964.03
  5. Step 5: Solve for x
    x = 183,944,964.03/19,088.49
  6. Step 6: Final answer
    x = 9,636.43

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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.