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Finding the Fourth Proportional to 38,399.99, 52,995.06 and 21,409.74

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Solution

The fourth proportional to 38,399.99, 52,995.06 and 21,409.74 is: 29,547.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,399.99 : 52,995.06 = 21,409.74 : x
  2. Step 2: Convert to fraction form
    38,399.99/52,995.06 = 21,409.74/x
  3. Step 3: Cross multiply
    38,399.99x = 52,995.06 × 21,409.74
  4. Step 4: Simplify right side
    38,399.99x = 1,134,610,455.88
  5. Step 5: Solve for x
    x = 1,134,610,455.88/38,399.99
  6. Step 6: Final answer
    x = 29,547.16

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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.