Home / 21,368.71-29,486.68-12,416.59

Finding the Fourth Proportional to 21,368.71, 29,486.68 and 12,416.59

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Solution

The fourth proportional to 21,368.71, 29,486.68 and 12,416.59 is: 17,133.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,368.71 : 29,486.68 = 12,416.59 : x
  2. Step 2: Convert to fraction form
    21,368.71/29,486.68 = 12,416.59/x
  3. Step 3: Cross multiply
    21,368.71x = 29,486.68 × 12,416.59
  4. Step 4: Simplify right side
    21,368.71x = 366,124,016.02
  5. Step 5: Solve for x
    x = 366,124,016.02/21,368.71
  6. Step 6: Final answer
    x = 17,133.65

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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.