Home / 10,478.20-15,701.10-7,011.40

Finding the Fourth Proportional to 10,478.20, 15,701.10 and 7,011.40

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Solution

The fourth proportional to 10,478.20, 15,701.10 and 7,011.40 is: 10,506.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,478.20 : 15,701.10 = 7,011.40 : x
  2. Step 2: Convert to fraction form
    10,478.20/15,701.10 = 7,011.40/x
  3. Step 3: Cross multiply
    10,478.20x = 15,701.10 × 7,011.40
  4. Step 4: Simplify right side
    10,478.20x = 110,086,692.54
  5. Step 5: Solve for x
    x = 110,086,692.54/10,478.20
  6. Step 6: Final answer
    x = 10,506.26

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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.