Home / 15,649.35-21,583.53-13,756.92

Finding the Fourth Proportional to 15,649.35, 21,583.53 and 13,756.92

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Solution

The fourth proportional to 15,649.35, 21,583.53 and 13,756.92 is: 18,973.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,649.35 : 21,583.53 = 13,756.92 : x
  2. Step 2: Convert to fraction form
    15,649.35/21,583.53 = 13,756.92/x
  3. Step 3: Cross multiply
    15,649.35x = 21,583.53 × 13,756.92
  4. Step 4: Simplify right side
    15,649.35x = 296,922,895.53
  5. Step 5: Solve for x
    x = 296,922,895.53/15,649.35
  6. Step 6: Final answer
    x = 18,973.50

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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.