Home / 21,292.67-29,368.14-15,625.50

Finding the Fourth Proportional to 21,292.67, 29,368.14 and 15,625.50

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Solution

The fourth proportional to 21,292.67, 29,368.14 and 15,625.50 is: 21,551.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.67 : 29,368.14 = 15,625.50 : x
  2. Step 2: Convert to fraction form
    21,292.67/29,368.14 = 15,625.50/x
  3. Step 3: Cross multiply
    21,292.67x = 29,368.14 × 15,625.50
  4. Step 4: Simplify right side
    21,292.67x = 458,891,871.57
  5. Step 5: Solve for x
    x = 458,891,871.57/21,292.67
  6. Step 6: Final answer
    x = 21,551.64

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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.