Home / 21,430.93-29,569.90-12,934.44

Finding the Fourth Proportional to 21,430.93, 29,569.90 and 12,934.44

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Solution

The fourth proportional to 21,430.93, 29,569.90 and 12,934.44 is: 17,846.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430.93 : 29,569.90 = 12,934.44 : x
  2. Step 2: Convert to fraction form
    21,430.93/29,569.90 = 12,934.44/x
  3. Step 3: Cross multiply
    21,430.93x = 29,569.90 × 12,934.44
  4. Step 4: Simplify right side
    21,430.93x = 382,470,097.36
  5. Step 5: Solve for x
    x = 382,470,097.36/21,430.93
  6. Step 6: Final answer
    x = 17,846.64

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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.