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Finding the Fourth Proportional to 19,581.40, 27,465.80 and 19,581.40

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Solution

The fourth proportional to 19,581.40, 27,465.80 and 19,581.40 is: 27,465.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,581.40 : 27,465.80 = 19,581.40 : x
  2. Step 2: Convert to fraction form
    19,581.40/27,465.80 = 19,581.40/x
  3. Step 3: Cross multiply
    19,581.40x = 27,465.80 × 19,581.40
  4. Step 4: Simplify right side
    19,581.40x = 537,818,816.12
  5. Step 5: Solve for x
    x = 537,818,816.12/19,581.40
  6. Step 6: Final answer
    x = 27,465.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.