Home / 21,013.51-28,998.65-11,582.08

Finding the Fourth Proportional to 21,013.51, 28,998.65 and 11,582.08

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Solution

The fourth proportional to 21,013.51, 28,998.65 and 11,582.08 is: 15,983.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,013.51 : 28,998.65 = 11,582.08 : x
  2. Step 2: Convert to fraction form
    21,013.51/28,998.65 = 11,582.08/x
  3. Step 3: Cross multiply
    21,013.51x = 28,998.65 × 11,582.08
  4. Step 4: Simplify right side
    21,013.51x = 335,864,684.19
  5. Step 5: Solve for x
    x = 335,864,684.19/21,013.51
  6. Step 6: Final answer
    x = 15,983.27

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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.