Home / 15,718.48-21,708.52-9,764.40

Finding the Fourth Proportional to 15,718.48, 21,708.52 and 9,764.40

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Solution

The fourth proportional to 15,718.48, 21,708.52 and 9,764.40 is: 13,485.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,718.48 : 21,708.52 = 9,764.40 : x
  2. Step 2: Convert to fraction form
    15,718.48/21,708.52 = 9,764.40/x
  3. Step 3: Cross multiply
    15,718.48x = 21,708.52 × 9,764.40
  4. Step 4: Simplify right side
    15,718.48x = 211,970,672.69
  5. Step 5: Solve for x
    x = 211,970,672.69/15,718.48
  6. Step 6: Final answer
    x = 13,485.44

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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.