Home / 14,503.25-19,980.33-13,631.36

Finding the Fourth Proportional to 14,503.25, 19,980.33 and 13,631.36

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Solution

The fourth proportional to 14,503.25, 19,980.33 and 13,631.36 is: 18,779.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,503.25 : 19,980.33 = 13,631.36 : x
  2. Step 2: Convert to fraction form
    14,503.25/19,980.33 = 13,631.36/x
  3. Step 3: Cross multiply
    14,503.25x = 19,980.33 × 13,631.36
  4. Step 4: Simplify right side
    14,503.25x = 272,358,971.25
  5. Step 5: Solve for x
    x = 272,358,971.25/14,503.25
  6. Step 6: Final answer
    x = 18,779.17

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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.