Home / 21,211.08-29,276.64-12,263.76

Finding the Fourth Proportional to 21,211.08, 29,276.64 and 12,263.76

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Solution

The fourth proportional to 21,211.08, 29,276.64 and 12,263.76 is: 16,927.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.08 : 29,276.64 = 12,263.76 : x
  2. Step 2: Convert to fraction form
    21,211.08/29,276.64 = 12,263.76/x
  3. Step 3: Cross multiply
    21,211.08x = 29,276.64 × 12,263.76
  4. Step 4: Simplify right side
    21,211.08x = 359,041,686.57
  5. Step 5: Solve for x
    x = 359,041,686.57/21,211.08
  6. Step 6: Final answer
    x = 16,927.08

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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.