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Finding the Fourth Proportional to 10,645.60, 16,048.13 and 9,931.99

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Solution

The fourth proportional to 10,645.60, 16,048.13 and 9,931.99 is: 14,972.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,645.60 : 16,048.13 = 9,931.99 : x
  2. Step 2: Convert to fraction form
    10,645.60/16,048.13 = 9,931.99/x
  3. Step 3: Cross multiply
    10,645.60x = 16,048.13 × 9,931.99
  4. Step 4: Simplify right side
    10,645.60x = 159,389,866.68
  5. Step 5: Solve for x
    x = 159,389,866.68/10,645.60
  6. Step 6: Final answer
    x = 14,972.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.