Home / 10,001.40-15,000.78-2,606.36

Finding the Fourth Proportional to 10,001.40, 15,000.78 and 2,606.36

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Solution

The fourth proportional to 10,001.40, 15,000.78 and 2,606.36 is: 3,909.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,001.40 : 15,000.78 = 2,606.36 : x
  2. Step 2: Convert to fraction form
    10,001.40/15,000.78 = 2,606.36/x
  3. Step 3: Cross multiply
    10,001.40x = 15,000.78 × 2,606.36
  4. Step 4: Simplify right side
    10,001.40x = 39,097,432.96
  5. Step 5: Solve for x
    x = 39,097,432.96/10,001.40
  6. Step 6: Final answer
    x = 3,909.20

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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.