Home / 12,970.20-19,439.10-9,503.40

Finding the Fourth Proportional to 12,970.20, 19,439.10 and 9,503.40

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Solution

The fourth proportional to 12,970.20, 19,439.10 and 9,503.40 is: 14,243.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,970.20 : 19,439.10 = 9,503.40 : x
  2. Step 2: Convert to fraction form
    12,970.20/19,439.10 = 9,503.40/x
  3. Step 3: Cross multiply
    12,970.20x = 19,439.10 × 9,503.40
  4. Step 4: Simplify right side
    12,970.20x = 184,737,542.94
  5. Step 5: Solve for x
    x = 184,737,542.94/12,970.20
  6. Step 6: Final answer
    x = 14,243.23

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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.