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Finding the Fourth Proportional to 10,870.35, 14,999.10 and 6,394.99

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Solution

The fourth proportional to 10,870.35, 14,999.10 and 6,394.99 is: 8,823.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,870.35 : 14,999.10 = 6,394.99 : x
  2. Step 2: Convert to fraction form
    10,870.35/14,999.10 = 6,394.99/x
  3. Step 3: Cross multiply
    10,870.35x = 14,999.10 × 6,394.99
  4. Step 4: Simplify right side
    10,870.35x = 95,919,094.51
  5. Step 5: Solve for x
    x = 95,919,094.51/10,870.35
  6. Step 6: Final answer
    x = 8,823.92

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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.