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Finding the Fourth Proportional to 10,339.69, 15,503.65 and 7,056.76

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Solution

The fourth proportional to 10,339.69, 15,503.65 and 7,056.76 is: 10,581.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,339.69 : 15,503.65 = 7,056.76 : x
  2. Step 2: Convert to fraction form
    10,339.69/15,503.65 = 7,056.76/x
  3. Step 3: Cross multiply
    10,339.69x = 15,503.65 × 7,056.76
  4. Step 4: Simplify right side
    10,339.69x = 109,405,537.17
  5. Step 5: Solve for x
    x = 109,405,537.17/10,339.69
  6. Step 6: Final answer
    x = 10,581.12

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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.