Home / 21,369.13-29,484.36-12,411.32

Finding the Fourth Proportional to 21,369.13, 29,484.36 and 12,411.32

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Solution

The fourth proportional to 21,369.13, 29,484.36 and 12,411.32 is: 17,124.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,369.13 : 29,484.36 = 12,411.32 : x
  2. Step 2: Convert to fraction form
    21,369.13/29,484.36 = 12,411.32/x
  3. Step 3: Cross multiply
    21,369.13x = 29,484.36 × 12,411.32
  4. Step 4: Simplify right side
    21,369.13x = 365,939,826.96
  5. Step 5: Solve for x
    x = 365,939,826.96/21,369.13
  6. Step 6: Final answer
    x = 17,124.69

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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.