Home / 21,097.49-29,088.06-13,530.47

Finding the Fourth Proportional to 21,097.49, 29,088.06 and 13,530.47

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Solution

The fourth proportional to 21,097.49, 29,088.06 and 13,530.47 is: 18,655.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,097.49 : 29,088.06 = 13,530.47 : x
  2. Step 2: Convert to fraction form
    21,097.49/29,088.06 = 13,530.47/x
  3. Step 3: Cross multiply
    21,097.49x = 29,088.06 × 13,530.47
  4. Step 4: Simplify right side
    21,097.49x = 393,574,977.75
  5. Step 5: Solve for x
    x = 393,574,977.75/21,097.49
  6. Step 6: Final answer
    x = 18,655.07

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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.