Home / 19,485.78-26,890.67-10,988.31

Finding the Fourth Proportional to 19,485.78, 26,890.67 and 10,988.31

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Solution

The fourth proportional to 19,485.78, 26,890.67 and 10,988.31 is: 15,164.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,485.78 : 26,890.67 = 10,988.31 : x
  2. Step 2: Convert to fraction form
    19,485.78/26,890.67 = 10,988.31/x
  3. Step 3: Cross multiply
    19,485.78x = 26,890.67 × 10,988.31
  4. Step 4: Simplify right side
    19,485.78x = 295,483,018.07
  5. Step 5: Solve for x
    x = 295,483,018.07/19,485.78
  6. Step 6: Final answer
    x = 15,164.03

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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.