Home / 49,921.69-74,881.09-12,985.69

Finding the Fourth Proportional to 49,921.69, 74,881.09 and 12,985.69

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Solution

The fourth proportional to 49,921.69, 74,881.09 and 12,985.69 is: 19,478.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,921.69 : 74,881.09 = 12,985.69 : x
  2. Step 2: Convert to fraction form
    49,921.69/74,881.09 = 12,985.69/x
  3. Step 3: Cross multiply
    49,921.69x = 74,881.09 × 12,985.69
  4. Step 4: Simplify right side
    49,921.69x = 972,382,621.60
  5. Step 5: Solve for x
    x = 972,382,621.60/49,921.69
  6. Step 6: Final answer
    x = 19,478.16

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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.