Home / 21,320.76-29,387.37-19,533.95

Finding the Fourth Proportional to 21,320.76, 29,387.37 and 19,533.95

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Solution

The fourth proportional to 21,320.76, 29,387.37 and 19,533.95 is: 26,924.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320.76 : 29,387.37 = 19,533.95 : x
  2. Step 2: Convert to fraction form
    21,320.76/29,387.37 = 19,533.95/x
  3. Step 3: Cross multiply
    21,320.76x = 29,387.37 × 19,533.95
  4. Step 4: Simplify right side
    21,320.76x = 574,051,416.21
  5. Step 5: Solve for x
    x = 574,051,416.21/21,320.76
  6. Step 6: Final answer
    x = 26,924.53

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Double scale
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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.