Home / 14,013.40-19,338.63-7,639.90

Finding the Fourth Proportional to 14,013.40, 19,338.63 and 7,639.90

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Solution

The fourth proportional to 14,013.40, 19,338.63 and 7,639.90 is: 10,543.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,013.40 : 19,338.63 = 7,639.90 : x
  2. Step 2: Convert to fraction form
    14,013.40/19,338.63 = 7,639.90/x
  3. Step 3: Cross multiply
    14,013.40x = 19,338.63 × 7,639.90
  4. Step 4: Simplify right side
    14,013.40x = 147,745,199.34
  5. Step 5: Solve for x
    x = 147,745,199.34/14,013.40
  6. Step 6: Final answer
    x = 10,543.14

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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.