Home / 10,478.34-15,717.47-4,238.28

Finding the Fourth Proportional to 10,478.34, 15,717.47 and 4,238.28

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Solution

The fourth proportional to 10,478.34, 15,717.47 and 4,238.28 is: 6,357.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,478.34 : 15,717.47 = 4,238.28 : x
  2. Step 2: Convert to fraction form
    10,478.34/15,717.47 = 4,238.28/x
  3. Step 3: Cross multiply
    10,478.34x = 15,717.47 × 4,238.28
  4. Step 4: Simplify right side
    10,478.34x = 66,615,038.75
  5. Step 5: Solve for x
    x = 66,615,038.75/10,478.34
  6. Step 6: Final answer
    x = 6,357.40

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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.