Home / 19,020.51-26,239.47-12,308.31

Finding the Fourth Proportional to 19,020.51, 26,239.47 and 12,308.31

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Solution

The fourth proportional to 19,020.51, 26,239.47 and 12,308.31 is: 16,979.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,020.51 : 26,239.47 = 12,308.31 : x
  2. Step 2: Convert to fraction form
    19,020.51/26,239.47 = 12,308.31/x
  3. Step 3: Cross multiply
    19,020.51x = 26,239.47 × 12,308.31
  4. Step 4: Simplify right side
    19,020.51x = 322,963,531.00
  5. Step 5: Solve for x
    x = 322,963,531.00/19,020.51
  6. Step 6: Final answer
    x = 16,979.75

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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.