Home / 21,460.19-29,614.95-13,512.87

Finding the Fourth Proportional to 21,460.19, 29,614.95 and 13,512.87

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Solution

The fourth proportional to 21,460.19, 29,614.95 and 13,512.87 is: 18,647.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,460.19 : 29,614.95 = 13,512.87 : x
  2. Step 2: Convert to fraction form
    21,460.19/29,614.95 = 13,512.87/x
  3. Step 3: Cross multiply
    21,460.19x = 29,614.95 × 13,512.87
  4. Step 4: Simplify right side
    21,460.19x = 400,182,969.41
  5. Step 5: Solve for x
    x = 400,182,969.41/21,460.19
  6. Step 6: Final answer
    x = 18,647.69

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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.