Home / 38,638.32-53,322.21-21,643.29

Finding the Fourth Proportional to 38,638.32, 53,322.21 and 21,643.29

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Solution

The fourth proportional to 38,638.32, 53,322.21 and 21,643.29 is: 29,868.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,638.32 : 53,322.21 = 21,643.29 : x
  2. Step 2: Convert to fraction form
    38,638.32/53,322.21 = 21,643.29/x
  3. Step 3: Cross multiply
    38,638.32x = 53,322.21 × 21,643.29
  4. Step 4: Simplify right side
    38,638.32x = 1,154,068,054.47
  5. Step 5: Solve for x
    x = 1,154,068,054.47/38,638.32
  6. Step 6: Final answer
    x = 29,868.48

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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.