Home / 15,678.06-21,632.16-8,962.60

Finding the Fourth Proportional to 15,678.06, 21,632.16 and 8,962.60

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Solution

The fourth proportional to 15,678.06, 21,632.16 and 8,962.60 is: 12,366.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,678.06 : 21,632.16 = 8,962.60 : x
  2. Step 2: Convert to fraction form
    15,678.06/21,632.16 = 8,962.60/x
  3. Step 3: Cross multiply
    15,678.06x = 21,632.16 × 8,962.60
  4. Step 4: Simplify right side
    15,678.06x = 193,880,417.31
  5. Step 5: Solve for x
    x = 193,880,417.31/15,678.06
  6. Step 6: Final answer
    x = 12,366.36

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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.