Home / 10,319.64-15,490.40-6,426.80

Finding the Fourth Proportional to 10,319.64, 15,490.40 and 6,426.80

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Solution

The fourth proportional to 10,319.64, 15,490.40 and 6,426.80 is: 9,647.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,319.64 : 15,490.40 = 6,426.80 : x
  2. Step 2: Convert to fraction form
    10,319.64/15,490.40 = 6,426.80/x
  3. Step 3: Cross multiply
    10,319.64x = 15,490.40 × 6,426.80
  4. Step 4: Simplify right side
    10,319.64x = 99,553,702.72
  5. Step 5: Solve for x
    x = 99,553,702.72/10,319.64
  6. Step 6: Final answer
    x = 9,647.01

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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.