Home / 21,175.07-31,762.29-5,164.67

Finding the Fourth Proportional to 21,175.07, 31,762.29 and 5,164.67

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Solution

The fourth proportional to 21,175.07, 31,762.29 and 5,164.67 is: 7,746.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,175.07 : 31,762.29 = 5,164.67 : x
  2. Step 2: Convert to fraction form
    21,175.07/31,762.29 = 5,164.67/x
  3. Step 3: Cross multiply
    21,175.07x = 31,762.29 × 5,164.67
  4. Step 4: Simplify right side
    21,175.07x = 164,041,587.48
  5. Step 5: Solve for x
    x = 164,041,587.48/21,175.07
  6. Step 6: Final answer
    x = 7,746.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.