Home / 21,320.36-29,420.16-12,368.24

Finding the Fourth Proportional to 21,320.36, 29,420.16 and 12,368.24

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Solution

The fourth proportional to 21,320.36, 29,420.16 and 12,368.24 is: 17,067.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320.36 : 29,420.16 = 12,368.24 : x
  2. Step 2: Convert to fraction form
    21,320.36/29,420.16 = 12,368.24/x
  3. Step 3: Cross multiply
    21,320.36x = 29,420.16 × 12,368.24
  4. Step 4: Simplify right side
    21,320.36x = 363,875,599.72
  5. Step 5: Solve for x
    x = 363,875,599.72/21,320.36
  6. Step 6: Final answer
    x = 17,067.05

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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.