Home / 15,631.93-21,570.05-8,917.16

Finding the Fourth Proportional to 15,631.93, 21,570.05 and 8,917.16

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Solution

The fourth proportional to 15,631.93, 21,570.05 and 8,917.16 is: 12,304.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,631.93 : 21,570.05 = 8,917.16 : x
  2. Step 2: Convert to fraction form
    15,631.93/21,570.05 = 8,917.16/x
  3. Step 3: Cross multiply
    15,631.93x = 21,570.05 × 8,917.16
  4. Step 4: Simplify right side
    15,631.93x = 192,343,587.06
  5. Step 5: Solve for x
    x = 192,343,587.06/15,631.93
  6. Step 6: Final answer
    x = 12,304.53

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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.