Home / 14,520.84-20,030.64-9,141.28

Finding the Fourth Proportional to 14,520.84, 20,030.64 and 9,141.28

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Solution

The fourth proportional to 14,520.84, 20,030.64 and 9,141.28 is: 12,609.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,520.84 : 20,030.64 = 9,141.28 : x
  2. Step 2: Convert to fraction form
    14,520.84/20,030.64 = 9,141.28/x
  3. Step 3: Cross multiply
    14,520.84x = 20,030.64 × 9,141.28
  4. Step 4: Simplify right side
    14,520.84x = 183,105,712.22
  5. Step 5: Solve for x
    x = 183,105,712.22/14,520.84
  6. Step 6: Final answer
    x = 12,609.85

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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.