Home / 30,320.13-45,424.77-21,979.46

Finding the Fourth Proportional to 30,320.13, 45,424.77 and 21,979.46

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Solution

The fourth proportional to 30,320.13, 45,424.77 and 21,979.46 is: 32,929.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,320.13 : 45,424.77 = 21,979.46 : x
  2. Step 2: Convert to fraction form
    30,320.13/45,424.77 = 21,979.46/x
  3. Step 3: Cross multiply
    30,320.13x = 45,424.77 × 21,979.46
  4. Step 4: Simplify right side
    30,320.13x = 998,411,770.52
  5. Step 5: Solve for x
    x = 998,411,770.52/30,320.13
  6. Step 6: Final answer
    x = 32,929.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.