Home / 20,312.37-28,038.13-13,960.00

Finding the Fourth Proportional to 20,312.37, 28,038.13 and 13,960.00

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Solution

The fourth proportional to 20,312.37, 28,038.13 and 13,960.00 is: 19,269.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,312.37 : 28,038.13 = 13,960.00 : x
  2. Step 2: Convert to fraction form
    20,312.37/28,038.13 = 13,960.00/x
  3. Step 3: Cross multiply
    20,312.37x = 28,038.13 × 13,960.00
  4. Step 4: Simplify right side
    20,312.37x = 391,412,215.76
  5. Step 5: Solve for x
    x = 391,412,215.76/20,312.37
  6. Step 6: Final answer
    x = 19,269.65

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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.