Home / 15,258.51-21,055.28-8,543.61

Finding the Fourth Proportional to 15,258.51, 21,055.28 and 8,543.61

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Solution

The fourth proportional to 15,258.51, 21,055.28 and 8,543.61 is: 11,789.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,258.51 : 21,055.28 = 8,543.61 : x
  2. Step 2: Convert to fraction form
    15,258.51/21,055.28 = 8,543.61/x
  3. Step 3: Cross multiply
    15,258.51x = 21,055.28 × 8,543.61
  4. Step 4: Simplify right side
    15,258.51x = 179,888,058.04
  5. Step 5: Solve for x
    x = 179,888,058.04/15,258.51
  6. Step 6: Final answer
    x = 11,789.36

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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.