Home / 38,149.15-52,643.70-21,152.40

Finding the Fourth Proportional to 38,149.15, 52,643.70 and 21,152.40

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Solution

The fourth proportional to 38,149.15, 52,643.70 and 21,152.40 is: 29,189.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,149.15 : 52,643.70 = 21,152.40 : x
  2. Step 2: Convert to fraction form
    38,149.15/52,643.70 = 21,152.40/x
  3. Step 3: Cross multiply
    38,149.15x = 52,643.70 × 21,152.40
  4. Step 4: Simplify right side
    38,149.15x = 1,113,540,599.88
  5. Step 5: Solve for x
    x = 1,113,540,599.88/38,149.15
  6. Step 6: Final answer
    x = 29,189.13

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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.