Home / 26,478.72-39,740.40-10,907.28

Finding the Fourth Proportional to 26,478.72, 39,740.40 and 10,907.28

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Solution

The fourth proportional to 26,478.72, 39,740.40 and 10,907.28 is: 16,370.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,478.72 : 39,740.40 = 10,907.28 : x
  2. Step 2: Convert to fraction form
    26,478.72/39,740.40 = 10,907.28/x
  3. Step 3: Cross multiply
    26,478.72x = 39,740.40 × 10,907.28
  4. Step 4: Simplify right side
    26,478.72x = 433,459,670.11
  5. Step 5: Solve for x
    x = 433,459,670.11/26,478.72
  6. Step 6: Final answer
    x = 16,370.11

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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.