Home / 21,319.90-29,424.29-12,365.55

Finding the Fourth Proportional to 21,319.90, 29,424.29 and 12,365.55

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Solution

The fourth proportional to 21,319.90, 29,424.29 and 12,365.55 is: 17,066.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,319.90 : 29,424.29 = 12,365.55 : x
  2. Step 2: Convert to fraction form
    21,319.90/29,424.29 = 12,365.55/x
  3. Step 3: Cross multiply
    21,319.90x = 29,424.29 × 12,365.55
  4. Step 4: Simplify right side
    21,319.90x = 363,847,467.38
  5. Step 5: Solve for x
    x = 363,847,467.38/21,319.90
  6. Step 6: Final answer
    x = 17,066.10

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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.