Home / 15,748.72-21,707.90-10,642.64

Finding the Fourth Proportional to 15,748.72, 21,707.90 and 10,642.64

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Solution

The fourth proportional to 15,748.72, 21,707.90 and 10,642.64 is: 14,669.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,748.72 : 21,707.90 = 10,642.64 : x
  2. Step 2: Convert to fraction form
    15,748.72/21,707.90 = 10,642.64/x
  3. Step 3: Cross multiply
    15,748.72x = 21,707.90 × 10,642.64
  4. Step 4: Simplify right side
    15,748.72x = 231,029,364.86
  5. Step 5: Solve for x
    x = 231,029,364.86/15,748.72
  6. Step 6: Final answer
    x = 14,669.72

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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.