Home / 15,664.21-21,595.70-12,444.71

Finding the Fourth Proportional to 15,664.21, 21,595.70 and 12,444.71

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Solution

The fourth proportional to 15,664.21, 21,595.70 and 12,444.71 is: 17,157.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,664.21 : 21,595.70 = 12,444.71 : x
  2. Step 2: Convert to fraction form
    15,664.21/21,595.70 = 12,444.71/x
  3. Step 3: Cross multiply
    15,664.21x = 21,595.70 × 12,444.71
  4. Step 4: Simplify right side
    15,664.21x = 268,752,223.75
  5. Step 5: Solve for x
    x = 268,752,223.75/15,664.21
  6. Step 6: Final answer
    x = 17,157.09

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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.