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Finding the Fourth Proportional to 14,303.87, 19,740.51 and 7,931.10

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Solution

The fourth proportional to 14,303.87, 19,740.51 and 7,931.10 is: 10,945.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,303.87 : 19,740.51 = 7,931.10 : x
  2. Step 2: Convert to fraction form
    14,303.87/19,740.51 = 7,931.10/x
  3. Step 3: Cross multiply
    14,303.87x = 19,740.51 × 7,931.10
  4. Step 4: Simplify right side
    14,303.87x = 156,563,921.85
  5. Step 5: Solve for x
    x = 156,563,921.85/14,303.87
  6. Step 6: Final answer
    x = 10,945.56

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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.