Home / 15,547.16-21,433.34-13,147.49

Finding the Fourth Proportional to 15,547.16, 21,433.34 and 13,147.49

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Solution

The fourth proportional to 15,547.16, 21,433.34 and 13,147.49 is: 18,125.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,547.16 : 21,433.34 = 13,147.49 : x
  2. Step 2: Convert to fraction form
    15,547.16/21,433.34 = 13,147.49/x
  3. Step 3: Cross multiply
    15,547.16x = 21,433.34 × 13,147.49
  4. Step 4: Simplify right side
    15,547.16x = 281,794,450.41
  5. Step 5: Solve for x
    x = 281,794,450.41/15,547.16
  6. Step 6: Final answer
    x = 18,125.15

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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.