Home / 21,453.90-29,606.34-13,070.40

Finding the Fourth Proportional to 21,453.90, 29,606.34 and 13,070.40

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Solution

The fourth proportional to 21,453.90, 29,606.34 and 13,070.40 is: 18,037.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,453.90 : 29,606.34 = 13,070.40 : x
  2. Step 2: Convert to fraction form
    21,453.90/29,606.34 = 13,070.40/x
  3. Step 3: Cross multiply
    21,453.90x = 29,606.34 × 13,070.40
  4. Step 4: Simplify right side
    21,453.90x = 386,966,706.34
  5. Step 5: Solve for x
    x = 386,966,706.34/21,453.90
  6. Step 6: Final answer
    x = 18,037.13

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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.