Home / 14,719.40-20,315.14-8,670.62

Finding the Fourth Proportional to 14,719.40, 20,315.14 and 8,670.62

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Solution

The fourth proportional to 14,719.40, 20,315.14 and 8,670.62 is: 11,966.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,719.40 : 20,315.14 = 8,670.62 : x
  2. Step 2: Convert to fraction form
    14,719.40/20,315.14 = 8,670.62/x
  3. Step 3: Cross multiply
    14,719.40x = 20,315.14 × 8,670.62
  4. Step 4: Simplify right side
    14,719.40x = 176,144,859.19
  5. Step 5: Solve for x
    x = 176,144,859.19/14,719.40
  6. Step 6: Final answer
    x = 11,966.85

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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.