Home / 38,988.03-53,803.79-21,525.90

Finding the Fourth Proportional to 38,988.03, 53,803.79 and 21,525.90

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Solution

The fourth proportional to 38,988.03, 53,803.79 and 21,525.90 is: 29,705.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,988.03 : 53,803.79 = 21,525.90 : x
  2. Step 2: Convert to fraction form
    38,988.03/53,803.79 = 21,525.90/x
  3. Step 3: Cross multiply
    38,988.03x = 53,803.79 × 21,525.90
  4. Step 4: Simplify right side
    38,988.03x = 1,158,175,003.16
  5. Step 5: Solve for x
    x = 1,158,175,003.16/38,988.03
  6. Step 6: Final answer
    x = 29,705.91

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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.