Home / 14,678.16-20,267.56-13,558.72

Finding the Fourth Proportional to 14,678.16, 20,267.56 and 13,558.72

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Solution

The fourth proportional to 14,678.16, 20,267.56 and 13,558.72 is: 18,721.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,678.16 : 20,267.56 = 13,558.72 : x
  2. Step 2: Convert to fraction form
    14,678.16/20,267.56 = 13,558.72/x
  3. Step 3: Cross multiply
    14,678.16x = 20,267.56 × 13,558.72
  4. Step 4: Simplify right side
    14,678.16x = 274,802,171.12
  5. Step 5: Solve for x
    x = 274,802,171.12/14,678.16
  6. Step 6: Final answer
    x = 18,721.84

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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.