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Finding the Fourth Proportional to 15,528, 23,295.64 and 5,139.76

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Solution

The fourth proportional to 15,528, 23,295.64 and 5,139.76 is: 7,710.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,528 : 23,295.64 = 5,139.76 : x
  2. Step 2: Convert to fraction form
    15,528/23,295.64 = 5,139.76/x
  3. Step 3: Cross multiply
    15,528x = 23,295.64 × 5,139.76
  4. Step 4: Simplify right side
    15,528x = 119,733,998.65
  5. Step 5: Solve for x
    x = 119,733,998.65/15,528
  6. Step 6: Final answer
    x = 7,710.84

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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.