Home / 15,342.63-21,174.44-9,378.29

Finding the Fourth Proportional to 15,342.63, 21,174.44 and 9,378.29

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Solution

The fourth proportional to 15,342.63, 21,174.44 and 9,378.29 is: 12,943.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,342.63 : 21,174.44 = 9,378.29 : x
  2. Step 2: Convert to fraction form
    15,342.63/21,174.44 = 9,378.29/x
  3. Step 3: Cross multiply
    15,342.63x = 21,174.44 × 9,378.29
  4. Step 4: Simplify right side
    15,342.63x = 198,579,886.14
  5. Step 5: Solve for x
    x = 198,579,886.14/15,342.63
  6. Step 6: Final answer
    x = 12,943.01

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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.