Home / 21,547.16-29,735.06-12,115.72

Finding the Fourth Proportional to 21,547.16, 29,735.06 and 12,115.72

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Solution

The fourth proportional to 21,547.16, 29,735.06 and 12,115.72 is: 16,719.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,547.16 : 29,735.06 = 12,115.72 : x
  2. Step 2: Convert to fraction form
    21,547.16/29,735.06 = 12,115.72/x
  3. Step 3: Cross multiply
    21,547.16x = 29,735.06 × 12,115.72
  4. Step 4: Simplify right side
    21,547.16x = 360,261,661.14
  5. Step 5: Solve for x
    x = 360,261,661.14/21,547.16
  6. Step 6: Final answer
    x = 16,719.68

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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.