Home / 21,390.99-29,527.80-19,148.91

Finding the Fourth Proportional to 21,390.99, 29,527.80 and 19,148.91

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Solution

The fourth proportional to 21,390.99, 29,527.80 and 19,148.91 is: 26,432.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,390.99 : 29,527.80 = 19,148.91 : x
  2. Step 2: Convert to fraction form
    21,390.99/29,527.80 = 19,148.91/x
  3. Step 3: Cross multiply
    21,390.99x = 29,527.80 × 19,148.91
  4. Step 4: Simplify right side
    21,390.99x = 565,425,184.70
  5. Step 5: Solve for x
    x = 565,425,184.70/21,390.99
  6. Step 6: Final answer
    x = 26,432.87

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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.