Home / 15,289.62-21,071.10-11,927.10

Finding the Fourth Proportional to 15,289.62, 21,071.10 and 11,927.10

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Solution

The fourth proportional to 15,289.62, 21,071.10 and 11,927.10 is: 16,437.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,289.62 : 21,071.10 = 11,927.10 : x
  2. Step 2: Convert to fraction form
    15,289.62/21,071.10 = 11,927.10/x
  3. Step 3: Cross multiply
    15,289.62x = 21,071.10 × 11,927.10
  4. Step 4: Simplify right side
    15,289.62x = 251,317,116.81
  5. Step 5: Solve for x
    x = 251,317,116.81/15,289.62
  6. Step 6: Final answer
    x = 16,437.11

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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.