Home / 28,376.51-39,159.85-15,629.74

Finding the Fourth Proportional to 28,376.51, 39,159.85 and 15,629.74

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Solution

The fourth proportional to 28,376.51, 39,159.85 and 15,629.74 is: 21,569.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,376.51 : 39,159.85 = 15,629.74 : x
  2. Step 2: Convert to fraction form
    28,376.51/39,159.85 = 15,629.74/x
  3. Step 3: Cross multiply
    28,376.51x = 39,159.85 × 15,629.74
  4. Step 4: Simplify right side
    28,376.51x = 612,057,999.99
  5. Step 5: Solve for x
    x = 612,057,999.99/28,376.51
  6. Step 6: Final answer
    x = 21,569.18

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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.