Home / 19,312.07-28,972.44-10,427.20

Finding the Fourth Proportional to 19,312.07, 28,972.44 and 10,427.20

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Solution

The fourth proportional to 19,312.07, 28,972.44 and 10,427.20 is: 15,643.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,312.07 : 28,972.44 = 10,427.20 : x
  2. Step 2: Convert to fraction form
    19,312.07/28,972.44 = 10,427.20/x
  3. Step 3: Cross multiply
    19,312.07x = 28,972.44 × 10,427.20
  4. Step 4: Simplify right side
    19,312.07x = 302,101,353.94
  5. Step 5: Solve for x
    x = 302,101,353.94/19,312.07
  6. Step 6: Final answer
    x = 15,643.14

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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.