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Finding the Fourth Proportional to 10,303.80, 15,455.70 and 7,023.30

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Solution

The fourth proportional to 10,303.80, 15,455.70 and 7,023.30 is: 10,534.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,303.80 : 15,455.70 = 7,023.30 : x
  2. Step 2: Convert to fraction form
    10,303.80/15,455.70 = 7,023.30/x
  3. Step 3: Cross multiply
    10,303.80x = 15,455.70 × 7,023.30
  4. Step 4: Simplify right side
    10,303.80x = 108,550,017.81
  5. Step 5: Solve for x
    x = 108,550,017.81/10,303.80
  6. Step 6: Final answer
    x = 10,534.95

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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.