Home / 21,056.90-31,558.95-10,529.87

Finding the Fourth Proportional to 21,056.90, 31,558.95 and 10,529.87

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Solution

The fourth proportional to 21,056.90, 31,558.95 and 10,529.87 is: 15,781.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,056.90 : 31,558.95 = 10,529.87 : x
  2. Step 2: Convert to fraction form
    21,056.90/31,558.95 = 10,529.87/x
  3. Step 3: Cross multiply
    21,056.90x = 31,558.95 × 10,529.87
  4. Step 4: Simplify right side
    21,056.90x = 332,311,483.04
  5. Step 5: Solve for x
    x = 332,311,483.04/21,056.90
  6. Step 6: Final answer
    x = 15,781.60

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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.