Home / 21,655.64-29,883.55-12,702.46

Finding the Fourth Proportional to 21,655.64, 29,883.55 and 12,702.46

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Solution

The fourth proportional to 21,655.64, 29,883.55 and 12,702.46 is: 17,528.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,655.64 : 29,883.55 = 12,702.46 : x
  2. Step 2: Convert to fraction form
    21,655.64/29,883.55 = 12,702.46/x
  3. Step 3: Cross multiply
    21,655.64x = 29,883.55 × 12,702.46
  4. Step 4: Simplify right side
    21,655.64x = 379,594,598.53
  5. Step 5: Solve for x
    x = 379,594,598.53/21,655.64
  6. Step 6: Final answer
    x = 17,528.67

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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.