Home / 21,298.52-29,410.44-13,354.40

Finding the Fourth Proportional to 21,298.52, 29,410.44 and 13,354.40

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Solution

The fourth proportional to 21,298.52, 29,410.44 and 13,354.40 is: 18,440.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,298.52 : 29,410.44 = 13,354.40 : x
  2. Step 2: Convert to fraction form
    21,298.52/29,410.44 = 13,354.40/x
  3. Step 3: Cross multiply
    21,298.52x = 29,410.44 × 13,354.40
  4. Step 4: Simplify right side
    21,298.52x = 392,758,779.94
  5. Step 5: Solve for x
    x = 392,758,779.94/21,298.52
  6. Step 6: Final answer
    x = 18,440.66

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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.