Home / 28,509.09-39,342.29-15,763.16

Finding the Fourth Proportional to 28,509.09, 39,342.29 and 15,763.16

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Solution

The fourth proportional to 28,509.09, 39,342.29 and 15,763.16 is: 21,753.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,509.09 : 39,342.29 = 15,763.16 : x
  2. Step 2: Convert to fraction form
    28,509.09/39,342.29 = 15,763.16/x
  3. Step 3: Cross multiply
    28,509.09x = 39,342.29 × 15,763.16
  4. Step 4: Simplify right side
    28,509.09x = 620,158,536.51
  5. Step 5: Solve for x
    x = 620,158,536.51/28,509.09
  6. Step 6: Final answer
    x = 21,753.01

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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.