Home / 19,130.15-28,678.79-6,648.55

Finding the Fourth Proportional to 19,130.15, 28,678.79 and 6,648.55

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Solution

The fourth proportional to 19,130.15, 28,678.79 and 6,648.55 is: 9,967.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,130.15 : 28,678.79 = 6,648.55 : x
  2. Step 2: Convert to fraction form
    19,130.15/28,678.79 = 6,648.55/x
  3. Step 3: Cross multiply
    19,130.15x = 28,678.79 × 6,648.55
  4. Step 4: Simplify right side
    19,130.15x = 190,672,392.64
  5. Step 5: Solve for x
    x = 190,672,392.64/19,130.15
  6. Step 6: Final answer
    x = 9,967.12

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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.