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Finding the Fourth Proportional to 15,477.71, 21,360.53 and 9,511.46

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Solution

The fourth proportional to 15,477.71, 21,360.53 and 9,511.46 is: 13,126.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,477.71 : 21,360.53 = 9,511.46 : x
  2. Step 2: Convert to fraction form
    15,477.71/21,360.53 = 9,511.46/x
  3. Step 3: Cross multiply
    15,477.71x = 21,360.53 × 9,511.46
  4. Step 4: Simplify right side
    15,477.71x = 203,169,672.31
  5. Step 5: Solve for x
    x = 203,169,672.31/15,477.71
  6. Step 6: Final answer
    x = 13,126.60

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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.