Home / 23,011.40-34,430.70-20,937.80

Finding the Fourth Proportional to 23,011.40, 34,430.70 and 20,937.80

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Solution

The fourth proportional to 23,011.40, 34,430.70 and 20,937.80 is: 31,328.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,011.40 : 34,430.70 = 20,937.80 : x
  2. Step 2: Convert to fraction form
    23,011.40/34,430.70 = 20,937.80/x
  3. Step 3: Cross multiply
    23,011.40x = 34,430.70 × 20,937.80
  4. Step 4: Simplify right side
    23,011.40x = 720,903,110.46
  5. Step 5: Solve for x
    x = 720,903,110.46/23,011.40
  6. Step 6: Final answer
    x = 31,328.09

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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.