Home / 39,219.70-58,816.91-12,918.18

Finding the Fourth Proportional to 39,219.70, 58,816.91 and 12,918.18

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Solution

The fourth proportional to 39,219.70, 58,816.91 and 12,918.18 is: 19,373.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,219.70 : 58,816.91 = 12,918.18 : x
  2. Step 2: Convert to fraction form
    39,219.70/58,816.91 = 12,918.18/x
  3. Step 3: Cross multiply
    39,219.70x = 58,816.91 × 12,918.18
  4. Step 4: Simplify right side
    39,219.70x = 759,807,430.42
  5. Step 5: Solve for x
    x = 759,807,430.42/39,219.70
  6. Step 6: Final answer
    x = 19,373.11

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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.