Home / 19,031.28-28,541.40-7,341.78

Finding the Fourth Proportional to 19,031.28, 28,541.40 and 7,341.78

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Solution

The fourth proportional to 19,031.28, 28,541.40 and 7,341.78 is: 11,010.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,031.28 : 28,541.40 = 7,341.78 : x
  2. Step 2: Convert to fraction form
    19,031.28/28,541.40 = 7,341.78/x
  3. Step 3: Cross multiply
    19,031.28x = 28,541.40 × 7,341.78
  4. Step 4: Simplify right side
    19,031.28x = 209,544,679.69
  5. Step 5: Solve for x
    x = 209,544,679.69/19,031.28
  6. Step 6: Final answer
    x = 11,010.54

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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.