Home / 42,005.45-63,019.85-18,315.06

Finding the Fourth Proportional to 42,005.45, 63,019.85 and 18,315.06

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Solution

The fourth proportional to 42,005.45, 63,019.85 and 18,315.06 is: 27,477.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,005.45 : 63,019.85 = 18,315.06 : x
  2. Step 2: Convert to fraction form
    42,005.45/63,019.85 = 18,315.06/x
  3. Step 3: Cross multiply
    42,005.45x = 63,019.85 × 18,315.06
  4. Step 4: Simplify right side
    42,005.45x = 1,154,212,242.37
  5. Step 5: Solve for x
    x = 1,154,212,242.37/42,005.45
  6. Step 6: Final answer
    x = 27,477.68

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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.