Home / 14,157.28-19,536.76-7,784

Finding the Fourth Proportional to 14,157.28, 19,536.76 and 7,784

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Solution

The fourth proportional to 14,157.28, 19,536.76 and 7,784 is: 10,741.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,157.28 : 19,536.76 = 7,784 : x
  2. Step 2: Convert to fraction form
    14,157.28/19,536.76 = 7,784/x
  3. Step 3: Cross multiply
    14,157.28x = 19,536.76 × 7,784
  4. Step 4: Simplify right side
    14,157.28x = 152,074,139.84
  5. Step 5: Solve for x
    x = 152,074,139.84/14,157.28
  6. Step 6: Final answer
    x = 10,741.76

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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.