Home / 15,331.51-21,157.73-9,043.89

Finding the Fourth Proportional to 15,331.51, 21,157.73 and 9,043.89

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Solution

The fourth proportional to 15,331.51, 21,157.73 and 9,043.89 is: 12,480.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,331.51 : 21,157.73 = 9,043.89 : x
  2. Step 2: Convert to fraction form
    15,331.51/21,157.73 = 9,043.89/x
  3. Step 3: Cross multiply
    15,331.51x = 21,157.73 × 9,043.89
  4. Step 4: Simplify right side
    15,331.51x = 191,348,182.77
  5. Step 5: Solve for x
    x = 191,348,182.77/15,331.51
  6. Step 6: Final answer
    x = 12,480.71

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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.