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Finding the Fourth Proportional to 10,368.80, 15,551.80 and 4,133.40

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Solution

The fourth proportional to 10,368.80, 15,551.80 and 4,133.40 is: 6,199.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,368.80 : 15,551.80 = 4,133.40 : x
  2. Step 2: Convert to fraction form
    10,368.80/15,551.80 = 4,133.40/x
  3. Step 3: Cross multiply
    10,368.80x = 15,551.80 × 4,133.40
  4. Step 4: Simplify right side
    10,368.80x = 64,281,810.12
  5. Step 5: Solve for x
    x = 64,281,810.12/10,368.80
  6. Step 6: Final answer
    x = 6,199.54

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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.