Home / 10,931.60-16,312.06-10,866.80

Finding the Fourth Proportional to 10,931.60, 16,312.06 and 10,866.80

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Solution

The fourth proportional to 10,931.60, 16,312.06 and 10,866.80 is: 16,215.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,931.60 : 16,312.06 = 10,866.80 : x
  2. Step 2: Convert to fraction form
    10,931.60/16,312.06 = 10,866.80/x
  3. Step 3: Cross multiply
    10,931.60x = 16,312.06 × 10,866.80
  4. Step 4: Simplify right side
    10,931.60x = 177,259,893.61
  5. Step 5: Solve for x
    x = 177,259,893.61/10,931.60
  6. Step 6: Final answer
    x = 16,215.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.