Home / 19,139.61-28,712.38-9,774.56

Finding the Fourth Proportional to 19,139.61, 28,712.38 and 9,774.56

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Solution

The fourth proportional to 19,139.61, 28,712.38 and 9,774.56 is: 14,663.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,139.61 : 28,712.38 = 9,774.56 : x
  2. Step 2: Convert to fraction form
    19,139.61/28,712.38 = 9,774.56/x
  3. Step 3: Cross multiply
    19,139.61x = 28,712.38 × 9,774.56
  4. Step 4: Simplify right side
    19,139.61x = 280,650,881.05
  5. Step 5: Solve for x
    x = 280,650,881.05/19,139.61
  6. Step 6: Final answer
    x = 14,663.35

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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.