Home / 38,631.21-53,312.25-21,635.41

Finding the Fourth Proportional to 38,631.21, 53,312.25 and 21,635.41

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Solution

The fourth proportional to 38,631.21, 53,312.25 and 21,635.41 is: 29,857.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,631.21 : 53,312.25 = 21,635.41 : x
  2. Step 2: Convert to fraction form
    38,631.21/53,312.25 = 21,635.41/x
  3. Step 3: Cross multiply
    38,631.21x = 53,312.25 × 21,635.41
  4. Step 4: Simplify right side
    38,631.21x = 1,153,432,386.77
  5. Step 5: Solve for x
    x = 1,153,432,386.77/38,631.21
  6. Step 6: Final answer
    x = 29,857.53

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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.