Home / 15,643.78-21,588.51-8,570.23

Finding the Fourth Proportional to 15,643.78, 21,588.51 and 8,570.23

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Solution

The fourth proportional to 15,643.78, 21,588.51 and 8,570.23 is: 11,826.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,643.78 : 21,588.51 = 8,570.23 : x
  2. Step 2: Convert to fraction form
    15,643.78/21,588.51 = 8,570.23/x
  3. Step 3: Cross multiply
    15,643.78x = 21,588.51 × 8,570.23
  4. Step 4: Simplify right side
    15,643.78x = 185,018,496.06
  5. Step 5: Solve for x
    x = 185,018,496.06/15,643.78
  6. Step 6: Final answer
    x = 11,826.97

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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.