Home / 38,639.98-53,325.17-21,643.23

Finding the Fourth Proportional to 38,639.98, 53,325.17 and 21,643.23

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Solution

The fourth proportional to 38,639.98, 53,325.17 and 21,643.23 is: 29,868.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,639.98 : 53,325.17 = 21,643.23 : x
  2. Step 2: Convert to fraction form
    38,639.98/53,325.17 = 21,643.23/x
  3. Step 3: Cross multiply
    38,639.98x = 53,325.17 × 21,643.23
  4. Step 4: Simplify right side
    38,639.98x = 1,154,128,652.47
  5. Step 5: Solve for x
    x = 1,154,128,652.47/38,639.98
  6. Step 6: Final answer
    x = 29,868.77

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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.