Home / 15,841.56-21,865.36-9,870.02

Finding the Fourth Proportional to 15,841.56, 21,865.36 and 9,870.02

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Solution

The fourth proportional to 15,841.56, 21,865.36 and 9,870.02 is: 13,623.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,841.56 : 21,865.36 = 9,870.02 : x
  2. Step 2: Convert to fraction form
    15,841.56/21,865.36 = 9,870.02/x
  3. Step 3: Cross multiply
    15,841.56x = 21,865.36 × 9,870.02
  4. Step 4: Simplify right side
    15,841.56x = 215,811,540.51
  5. Step 5: Solve for x
    x = 215,811,540.51/15,841.56
  6. Step 6: Final answer
    x = 13,623.12

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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.