Home / 38,647.31-53,332.63-21,651.49

Finding the Fourth Proportional to 38,647.31, 53,332.63 and 21,651.49

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Solution

The fourth proportional to 38,647.31, 53,332.63 and 21,651.49 is: 29,878.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,647.31 : 53,332.63 = 21,651.49 : x
  2. Step 2: Convert to fraction form
    38,647.31/53,332.63 = 21,651.49/x
  3. Step 3: Cross multiply
    38,647.31x = 53,332.63 × 21,651.49
  4. Step 4: Simplify right side
    38,647.31x = 1,154,731,159.00
  5. Step 5: Solve for x
    x = 1,154,731,159.00/38,647.31
  6. Step 6: Final answer
    x = 29,878.70

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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.