Home / 15,706.09-21,670.90-9,332.20

Finding the Fourth Proportional to 15,706.09, 21,670.90 and 9,332.20

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Solution

The fourth proportional to 15,706.09, 21,670.90 and 9,332.20 is: 12,876.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,706.09 : 21,670.90 = 9,332.20 : x
  2. Step 2: Convert to fraction form
    15,706.09/21,670.90 = 9,332.20/x
  3. Step 3: Cross multiply
    15,706.09x = 21,670.90 × 9,332.20
  4. Step 4: Simplify right side
    15,706.09x = 202,237,172.98
  5. Step 5: Solve for x
    x = 202,237,172.98/15,706.09
  6. Step 6: Final answer
    x = 12,876.35

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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.