Home / 28,005.47-38,648.39-15,259.49

Finding the Fourth Proportional to 28,005.47, 38,648.39 and 15,259.49

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Solution

The fourth proportional to 28,005.47, 38,648.39 and 15,259.49 is: 21,058.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,005.47 : 38,648.39 = 15,259.49 : x
  2. Step 2: Convert to fraction form
    28,005.47/38,648.39 = 15,259.49/x
  3. Step 3: Cross multiply
    28,005.47x = 38,648.39 × 15,259.49
  4. Step 4: Simplify right side
    28,005.47x = 589,754,451.18
  5. Step 5: Solve for x
    x = 589,754,451.18/28,005.47
  6. Step 6: Final answer
    x = 21,058.55

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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.