Home / 11,157.94-15,397.98-6,312.40

Finding the Fourth Proportional to 11,157.94, 15,397.98 and 6,312.40

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Solution

The fourth proportional to 11,157.94, 15,397.98 and 6,312.40 is: 8,711.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,157.94 : 15,397.98 = 6,312.40 : x
  2. Step 2: Convert to fraction form
    11,157.94/15,397.98 = 6,312.40/x
  3. Step 3: Cross multiply
    11,157.94x = 15,397.98 × 6,312.40
  4. Step 4: Simplify right side
    11,157.94x = 97,198,208.95
  5. Step 5: Solve for x
    x = 97,198,208.95/11,157.94
  6. Step 6: Final answer
    x = 8,711.12

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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.