Home / 21,281.59-29,368.65-11,721.25

Finding the Fourth Proportional to 21,281.59, 29,368.65 and 11,721.25

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Solution

The fourth proportional to 21,281.59, 29,368.65 and 11,721.25 is: 16,175.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,281.59 : 29,368.65 = 11,721.25 : x
  2. Step 2: Convert to fraction form
    21,281.59/29,368.65 = 11,721.25/x
  3. Step 3: Cross multiply
    21,281.59x = 29,368.65 × 11,721.25
  4. Step 4: Simplify right side
    21,281.59x = 344,237,288.81
  5. Step 5: Solve for x
    x = 344,237,288.81/21,281.59
  6. Step 6: Final answer
    x = 16,175.36

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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.