Home / 15,746.79-21,723.55-10,640.67

Finding the Fourth Proportional to 15,746.79, 21,723.55 and 10,640.67

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Solution

The fourth proportional to 15,746.79, 21,723.55 and 10,640.67 is: 14,679.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,746.79 : 21,723.55 = 10,640.67 : x
  2. Step 2: Convert to fraction form
    15,746.79/21,723.55 = 10,640.67/x
  3. Step 3: Cross multiply
    15,746.79x = 21,723.55 × 10,640.67
  4. Step 4: Simplify right side
    15,746.79x = 231,153,126.78
  5. Step 5: Solve for x
    x = 231,153,126.78/15,746.79
  6. Step 6: Final answer
    x = 14,679.38

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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.