Home / 21,730.29-29,989.29-12,298.85

Finding the Fourth Proportional to 21,730.29, 29,989.29 and 12,298.85

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Solution

The fourth proportional to 21,730.29, 29,989.29 and 12,298.85 is: 16,973.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,730.29 : 29,989.29 = 12,298.85 : x
  2. Step 2: Convert to fraction form
    21,730.29/29,989.29 = 12,298.85/x
  3. Step 3: Cross multiply
    21,730.29x = 29,989.29 × 12,298.85
  4. Step 4: Simplify right side
    21,730.29x = 368,833,779.32
  5. Step 5: Solve for x
    x = 368,833,779.32/21,730.29
  6. Step 6: Final answer
    x = 16,973.26

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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.