Home / 21,271.13-29,346.28-21,238.32

Finding the Fourth Proportional to 21,271.13, 29,346.28 and 21,238.32

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Solution

The fourth proportional to 21,271.13, 29,346.28 and 21,238.32 is: 29,301.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.13 : 29,346.28 = 21,238.32 : x
  2. Step 2: Convert to fraction form
    21,271.13/29,346.28 = 21,238.32/x
  3. Step 3: Cross multiply
    21,271.13x = 29,346.28 × 21,238.32
  4. Step 4: Simplify right side
    21,271.13x = 623,265,579.26
  5. Step 5: Solve for x
    x = 623,265,579.26/21,271.13
  6. Step 6: Final answer
    x = 29,301.02

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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.