Home / 18,312.57-25,271.20-10,355.07

Finding the Fourth Proportional to 18,312.57, 25,271.20 and 10,355.07

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Solution

The fourth proportional to 18,312.57, 25,271.20 and 10,355.07 is: 14,289.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.57 : 25,271.20 = 10,355.07 : x
  2. Step 2: Convert to fraction form
    18,312.57/25,271.20 = 10,355.07/x
  3. Step 3: Cross multiply
    18,312.57x = 25,271.20 × 10,355.07
  4. Step 4: Simplify right side
    18,312.57x = 261,685,044.98
  5. Step 5: Solve for x
    x = 261,685,044.98/18,312.57
  6. Step 6: Final answer
    x = 14,289.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.