Home / 21,260-29,346.48-14,655.20

Finding the Fourth Proportional to 21,260, 29,346.48 and 14,655.20

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Solution

The fourth proportional to 21,260, 29,346.48 and 14,655.20 is: 20,229.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,260 : 29,346.48 = 14,655.20 : x
  2. Step 2: Convert to fraction form
    21,260/29,346.48 = 14,655.20/x
  3. Step 3: Cross multiply
    21,260x = 29,346.48 × 14,655.20
  4. Step 4: Simplify right side
    21,260x = 430,078,533.70
  5. Step 5: Solve for x
    x = 430,078,533.70/21,260
  6. Step 6: Final answer
    x = 20,229.47

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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.