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Finding the Fourth Proportional to 15,483.60, 21,343.92 and 9,510.60

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Solution

The fourth proportional to 15,483.60, 21,343.92 and 9,510.60 is: 13,110.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,483.60 : 21,343.92 = 9,510.60 : x
  2. Step 2: Convert to fraction form
    15,483.60/21,343.92 = 9,510.60/x
  3. Step 3: Cross multiply
    15,483.60x = 21,343.92 × 9,510.60
  4. Step 4: Simplify right side
    15,483.60x = 202,993,485.55
  5. Step 5: Solve for x
    x = 202,993,485.55/15,483.60
  6. Step 6: Final answer
    x = 13,110.23

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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.