Home / 30,297.04-45,424.48-13,420.89

Finding the Fourth Proportional to 30,297.04, 45,424.48 and 13,420.89

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Solution

The fourth proportional to 30,297.04, 45,424.48 and 13,420.89 is: 20,122.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,297.04 : 45,424.48 = 13,420.89 : x
  2. Step 2: Convert to fraction form
    30,297.04/45,424.48 = 13,420.89/x
  3. Step 3: Cross multiply
    30,297.04x = 45,424.48 × 13,420.89
  4. Step 4: Simplify right side
    30,297.04x = 609,636,949.39
  5. Step 5: Solve for x
    x = 609,636,949.39/30,297.04
  6. Step 6: Final answer
    x = 20,122.00

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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.