Home / 15,624-21,568.23-9,966.51

Finding the Fourth Proportional to 15,624, 21,568.23 and 9,966.51

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Solution

The fourth proportional to 15,624, 21,568.23 and 9,966.51 is: 13,758.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,624 : 21,568.23 = 9,966.51 : x
  2. Step 2: Convert to fraction form
    15,624/21,568.23 = 9,966.51/x
  3. Step 3: Cross multiply
    15,624x = 21,568.23 × 9,966.51
  4. Step 4: Simplify right side
    15,624x = 214,959,979.98
  5. Step 5: Solve for x
    x = 214,959,979.98/15,624
  6. Step 6: Final answer
    x = 13,758.32

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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.