Home / 19,971-27,495.20-15,714.56

Finding the Fourth Proportional to 19,971, 27,495.20 and 15,714.56

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Solution

The fourth proportional to 19,971, 27,495.20 and 15,714.56 is: 21,635.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,971 : 27,495.20 = 15,714.56 : x
  2. Step 2: Convert to fraction form
    19,971/27,495.20 = 15,714.56/x
  3. Step 3: Cross multiply
    19,971x = 27,495.20 × 15,714.56
  4. Step 4: Simplify right side
    19,971x = 432,074,970.11
  5. Step 5: Solve for x
    x = 432,074,970.11/19,971
  6. Step 6: Final answer
    x = 21,635.12

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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.