Home / 19,318.61-28,988.69-10,433.76

Finding the Fourth Proportional to 19,318.61, 28,988.69 and 10,433.76

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Solution

The fourth proportional to 19,318.61, 28,988.69 and 10,433.76 is: 15,656.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,318.61 : 28,988.69 = 10,433.76 : x
  2. Step 2: Convert to fraction form
    19,318.61/28,988.69 = 10,433.76/x
  3. Step 3: Cross multiply
    19,318.61x = 28,988.69 × 10,433.76
  4. Step 4: Simplify right side
    19,318.61x = 302,460,852.92
  5. Step 5: Solve for x
    x = 302,460,852.92/19,318.61
  6. Step 6: Final answer
    x = 15,656.45

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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.