Home / 28,587.36-39,450.06-15,666.51

Finding the Fourth Proportional to 28,587.36, 39,450.06 and 15,666.51

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Solution

The fourth proportional to 28,587.36, 39,450.06 and 15,666.51 is: 21,619.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,587.36 : 39,450.06 = 15,666.51 : x
  2. Step 2: Convert to fraction form
    28,587.36/39,450.06 = 15,666.51/x
  3. Step 3: Cross multiply
    28,587.36x = 39,450.06 × 15,666.51
  4. Step 4: Simplify right side
    28,587.36x = 618,044,759.49
  5. Step 5: Solve for x
    x = 618,044,759.49/28,587.36
  6. Step 6: Final answer
    x = 21,619.51

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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.