Home / 21,328.22-29,423.40-12,370.53

Finding the Fourth Proportional to 21,328.22, 29,423.40 and 12,370.53

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Solution

The fourth proportional to 21,328.22, 29,423.40 and 12,370.53 is: 17,065.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328.22 : 29,423.40 = 12,370.53 : x
  2. Step 2: Convert to fraction form
    21,328.22/29,423.40 = 12,370.53/x
  3. Step 3: Cross multiply
    21,328.22x = 29,423.40 × 12,370.53
  4. Step 4: Simplify right side
    21,328.22x = 363,983,052.40
  5. Step 5: Solve for x
    x = 363,983,052.40/21,328.22
  6. Step 6: Final answer
    x = 17,065.80

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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.