Home / 38,490.64-53,116.56-21,495.16

Finding the Fourth Proportional to 38,490.64, 53,116.56 and 21,495.16

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Solution

The fourth proportional to 38,490.64, 53,116.56 and 21,495.16 is: 29,663.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,490.64 : 53,116.56 = 21,495.16 : x
  2. Step 2: Convert to fraction form
    38,490.64/53,116.56 = 21,495.16/x
  3. Step 3: Cross multiply
    38,490.64x = 53,116.56 × 21,495.16
  4. Step 4: Simplify right side
    38,490.64x = 1,141,748,955.85
  5. Step 5: Solve for x
    x = 1,141,748,955.85/38,490.64
  6. Step 6: Final answer
    x = 29,663.03

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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.