Home / 21,316.16-29,416.47-11,756.39

Finding the Fourth Proportional to 21,316.16, 29,416.47 and 11,756.39

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Solution

The fourth proportional to 21,316.16, 29,416.47 and 11,756.39 is: 16,223.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,316.16 : 29,416.47 = 11,756.39 : x
  2. Step 2: Convert to fraction form
    21,316.16/29,416.47 = 11,756.39/x
  3. Step 3: Cross multiply
    21,316.16x = 29,416.47 × 11,756.39
  4. Step 4: Simplify right side
    21,316.16x = 345,831,468.04
  5. Step 5: Solve for x
    x = 345,831,468.04/21,316.16
  6. Step 6: Final answer
    x = 16,223.91

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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.