Home / 10,378.64-15,567.42-4,138.40

Finding the Fourth Proportional to 10,378.64, 15,567.42 and 4,138.40

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Solution

The fourth proportional to 10,378.64, 15,567.42 and 4,138.40 is: 6,207.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,378.64 : 15,567.42 = 4,138.40 : x
  2. Step 2: Convert to fraction form
    10,378.64/15,567.42 = 4,138.40/x
  3. Step 3: Cross multiply
    10,378.64x = 15,567.42 × 4,138.40
  4. Step 4: Simplify right side
    10,378.64x = 64,424,210.93
  5. Step 5: Solve for x
    x = 64,424,210.93/10,378.64
  6. Step 6: Final answer
    x = 6,207.38

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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.