Home / 30,602.81-42,221.25-19,273.24

Finding the Fourth Proportional to 30,602.81, 42,221.25 and 19,273.24

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Solution

The fourth proportional to 30,602.81, 42,221.25 and 19,273.24 is: 26,590.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,602.81 : 42,221.25 = 19,273.24 : x
  2. Step 2: Convert to fraction form
    30,602.81/42,221.25 = 19,273.24/x
  3. Step 3: Cross multiply
    30,602.81x = 42,221.25 × 19,273.24
  4. Step 4: Simplify right side
    30,602.81x = 813,740,337.13
  5. Step 5: Solve for x
    x = 813,740,337.13/30,602.81
  6. Step 6: Final answer
    x = 26,590.38

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Double scale
Find fourth proportional to 30,603.81, 42,222.63 and 19,274.24
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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.