Home / 10,688.40-16,032.60-10,429.20

Finding the Fourth Proportional to 10,688.40, 16,032.60 and 10,429.20

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Solution

The fourth proportional to 10,688.40, 16,032.60 and 10,429.20 is: 15,643.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,688.40 : 16,032.60 = 10,429.20 : x
  2. Step 2: Convert to fraction form
    10,688.40/16,032.60 = 10,429.20/x
  3. Step 3: Cross multiply
    10,688.40x = 16,032.60 × 10,429.20
  4. Step 4: Simplify right side
    10,688.40x = 167,207,191.92
  5. Step 5: Solve for x
    x = 167,207,191.92/10,688.40
  6. Step 6: Final answer
    x = 15,643.80

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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.