Home / 42,018.91-63,038.09-18,647.17

Finding the Fourth Proportional to 42,018.91, 63,038.09 and 18,647.17

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Solution

The fourth proportional to 42,018.91, 63,038.09 and 18,647.17 is: 27,975.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,018.91 : 63,038.09 = 18,647.17 : x
  2. Step 2: Convert to fraction form
    42,018.91/63,038.09 = 18,647.17/x
  3. Step 3: Cross multiply
    42,018.91x = 63,038.09 × 18,647.17
  4. Step 4: Simplify right side
    42,018.91x = 1,175,481,980.71
  5. Step 5: Solve for x
    x = 1,175,481,980.71/42,018.91
  6. Step 6: Final answer
    x = 27,975.07

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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.