Home / 13,426.90-20,140.35-9,490.30

Finding the Fourth Proportional to 13,426.90, 20,140.35 and 9,490.30

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Solution

The fourth proportional to 13,426.90, 20,140.35 and 9,490.30 is: 14,235.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,426.90 : 20,140.35 = 9,490.30 : x
  2. Step 2: Convert to fraction form
    13,426.90/20,140.35 = 9,490.30/x
  3. Step 3: Cross multiply
    13,426.90x = 20,140.35 × 9,490.30
  4. Step 4: Simplify right side
    13,426.90x = 191,137,963.61
  5. Step 5: Solve for x
    x = 191,137,963.61/13,426.90
  6. Step 6: Final answer
    x = 14,235.45

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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.