Home / 13,931.55-19,206.56-9,945.74

Finding the Fourth Proportional to 13,931.55, 19,206.56 and 9,945.74

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Solution

The fourth proportional to 13,931.55, 19,206.56 and 9,945.74 is: 13,711.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.55 : 19,206.56 = 9,945.74 : x
  2. Step 2: Convert to fraction form
    13,931.55/19,206.56 = 9,945.74/x
  3. Step 3: Cross multiply
    13,931.55x = 19,206.56 × 9,945.74
  4. Step 4: Simplify right side
    13,931.55x = 191,023,306.29
  5. Step 5: Solve for x
    x = 191,023,306.29/13,931.55
  6. Step 6: Final answer
    x = 13,711.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.