Home / 19,973.20-29,981.40-11,225.20

Finding the Fourth Proportional to 19,973.20, 29,981.40 and 11,225.20

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Solution

The fourth proportional to 19,973.20, 29,981.40 and 11,225.20 is: 16,849.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,973.20 : 29,981.40 = 11,225.20 : x
  2. Step 2: Convert to fraction form
    19,973.20/29,981.40 = 11,225.20/x
  3. Step 3: Cross multiply
    19,973.20x = 29,981.40 × 11,225.20
  4. Step 4: Simplify right side
    19,973.20x = 336,547,211.28
  5. Step 5: Solve for x
    x = 336,547,211.28/19,973.20
  6. Step 6: Final answer
    x = 16,849.94

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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.