Home / 20,670.95-28,528.13-11,717.48

Finding the Fourth Proportional to 20,670.95, 28,528.13 and 11,717.48

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Solution

The fourth proportional to 20,670.95, 28,528.13 and 11,717.48 is: 16,171.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.95 : 28,528.13 = 11,717.48 : x
  2. Step 2: Convert to fraction form
    20,670.95/28,528.13 = 11,717.48/x
  3. Step 3: Cross multiply
    20,670.95x = 28,528.13 × 11,717.48
  4. Step 4: Simplify right side
    20,670.95x = 334,277,792.71
  5. Step 5: Solve for x
    x = 334,277,792.71/20,670.95
  6. Step 6: Final answer
    x = 16,171.38

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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.