Home / 28,376.64-39,159.36-15,801.39

Finding the Fourth Proportional to 28,376.64, 39,159.36 and 15,801.39

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Solution

The fourth proportional to 28,376.64, 39,159.36 and 15,801.39 is: 21,805.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,376.64 : 39,159.36 = 15,801.39 : x
  2. Step 2: Convert to fraction form
    28,376.64/39,159.36 = 15,801.39/x
  3. Step 3: Cross multiply
    28,376.64x = 39,159.36 × 15,801.39
  4. Step 4: Simplify right side
    28,376.64x = 618,772,319.51
  5. Step 5: Solve for x
    x = 618,772,319.51/28,376.64
  6. Step 6: Final answer
    x = 21,805.69

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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.