Home / 21,258.76-29,337.78-13,298.44

Finding the Fourth Proportional to 21,258.76, 29,337.78 and 13,298.44

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Solution

The fourth proportional to 21,258.76, 29,337.78 and 13,298.44 is: 18,352.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,258.76 : 29,337.78 = 13,298.44 : x
  2. Step 2: Convert to fraction form
    21,258.76/29,337.78 = 13,298.44/x
  3. Step 3: Cross multiply
    21,258.76x = 29,337.78 × 13,298.44
  4. Step 4: Simplify right side
    21,258.76x = 390,146,707.06
  5. Step 5: Solve for x
    x = 390,146,707.06/21,258.76
  6. Step 6: Final answer
    x = 18,352.28

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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.