Home / 21,358.04-29,476.32-13,400.60

Finding the Fourth Proportional to 21,358.04, 29,476.32 and 13,400.60

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Solution

The fourth proportional to 21,358.04, 29,476.32 and 13,400.60 is: 18,494.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,358.04 : 29,476.32 = 13,400.60 : x
  2. Step 2: Convert to fraction form
    21,358.04/29,476.32 = 13,400.60/x
  3. Step 3: Cross multiply
    21,358.04x = 29,476.32 × 13,400.60
  4. Step 4: Simplify right side
    21,358.04x = 395,000,373.79
  5. Step 5: Solve for x
    x = 395,000,373.79/21,358.04
  6. Step 6: Final answer
    x = 18,494.22

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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.