Home / 19,970.92-27,566.18-12,897.20

Finding the Fourth Proportional to 19,970.92, 27,566.18 and 12,897.20

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Solution

The fourth proportional to 19,970.92, 27,566.18 and 12,897.20 is: 17,802.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,970.92 : 27,566.18 = 12,897.20 : x
  2. Step 2: Convert to fraction form
    19,970.92/27,566.18 = 12,897.20/x
  3. Step 3: Cross multiply
    19,970.92x = 27,566.18 × 12,897.20
  4. Step 4: Simplify right side
    19,970.92x = 355,526,536.70
  5. Step 5: Solve for x
    x = 355,526,536.70/19,970.92
  6. Step 6: Final answer
    x = 17,802.21

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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.