Home / 11,421.24-15,746.86-9,718.04

Finding the Fourth Proportional to 11,421.24, 15,746.86 and 9,718.04

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Solution

The fourth proportional to 11,421.24, 15,746.86 and 9,718.04 is: 13,398.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.24 : 15,746.86 = 9,718.04 : x
  2. Step 2: Convert to fraction form
    11,421.24/15,746.86 = 9,718.04/x
  3. Step 3: Cross multiply
    11,421.24x = 15,746.86 × 9,718.04
  4. Step 4: Simplify right side
    11,421.24x = 153,028,615.35
  5. Step 5: Solve for x
    x = 153,028,615.35/11,421.24
  6. Step 6: Final answer
    x = 13,398.60

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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.