Home / 19,970.66-27,539.82-15,492.78

Finding the Fourth Proportional to 19,970.66, 27,539.82 and 15,492.78

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Solution

The fourth proportional to 19,970.66, 27,539.82 and 15,492.78 is: 21,364.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,970.66 : 27,539.82 = 15,492.78 : x
  2. Step 2: Convert to fraction form
    19,970.66/27,539.82 = 15,492.78/x
  3. Step 3: Cross multiply
    19,970.66x = 27,539.82 × 15,492.78
  4. Step 4: Simplify right side
    19,970.66x = 426,668,372.50
  5. Step 5: Solve for x
    x = 426,668,372.50/19,970.66
  6. Step 6: Final answer
    x = 21,364.76

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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.