Home / 20,726.04-31,089.06-5,143.67

Finding the Fourth Proportional to 20,726.04, 31,089.06 and 5,143.67

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Solution

The fourth proportional to 20,726.04, 31,089.06 and 5,143.67 is: 7,715.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726.04 : 31,089.06 = 5,143.67 : x
  2. Step 2: Convert to fraction form
    20,726.04/31,089.06 = 5,143.67/x
  3. Step 3: Cross multiply
    20,726.04x = 31,089.06 × 5,143.67
  4. Step 4: Simplify right side
    20,726.04x = 159,911,865.25
  5. Step 5: Solve for x
    x = 159,911,865.25/20,726.04
  6. Step 6: Final answer
    x = 7,715.51

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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.