Home / 30,148.02-41,590.80-21,201.30

Finding the Fourth Proportional to 30,148.02, 41,590.80 and 21,201.30

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Solution

The fourth proportional to 30,148.02, 41,590.80 and 21,201.30 is: 29,248.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,148.02 : 41,590.80 = 21,201.30 : x
  2. Step 2: Convert to fraction form
    30,148.02/41,590.80 = 21,201.30/x
  3. Step 3: Cross multiply
    30,148.02x = 41,590.80 × 21,201.30
  4. Step 4: Simplify right side
    30,148.02x = 881,779,028.04
  5. Step 5: Solve for x
    x = 881,779,028.04/30,148.02
  6. Step 6: Final answer
    x = 29,248.32

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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.