Home / 19,320.80-29,000.40-9,471.20

Finding the Fourth Proportional to 19,320.80, 29,000.40 and 9,471.20

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Solution

The fourth proportional to 19,320.80, 29,000.40 and 9,471.20 is: 14,216.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,320.80 : 29,000.40 = 9,471.20 : x
  2. Step 2: Convert to fraction form
    19,320.80/29,000.40 = 9,471.20/x
  3. Step 3: Cross multiply
    19,320.80x = 29,000.40 × 9,471.20
  4. Step 4: Simplify right side
    19,320.80x = 274,668,588.48
  5. Step 5: Solve for x
    x = 274,668,588.48/19,320.80
  6. Step 6: Final answer
    x = 14,216.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.