Home / 14,187.72-21,291.30-13,585.08

Finding the Fourth Proportional to 14,187.72, 21,291.30 and 13,585.08

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Solution

The fourth proportional to 14,187.72, 21,291.30 and 13,585.08 is: 20,386.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,187.72 : 21,291.30 = 13,585.08 : x
  2. Step 2: Convert to fraction form
    14,187.72/21,291.30 = 13,585.08/x
  3. Step 3: Cross multiply
    14,187.72x = 21,291.30 × 13,585.08
  4. Step 4: Simplify right side
    14,187.72x = 289,244,013.80
  5. Step 5: Solve for x
    x = 289,244,013.80/14,187.72
  6. Step 6: Final answer
    x = 20,386.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.