Home / 19,614.40-29,421.60-18,347.20

Finding the Fourth Proportional to 19,614.40, 29,421.60 and 18,347.20

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Solution

The fourth proportional to 19,614.40, 29,421.60 and 18,347.20 is: 27,520.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,614.40 : 29,421.60 = 18,347.20 : x
  2. Step 2: Convert to fraction form
    19,614.40/29,421.60 = 18,347.20/x
  3. Step 3: Cross multiply
    19,614.40x = 29,421.60 × 18,347.20
  4. Step 4: Simplify right side
    19,614.40x = 539,803,979.52
  5. Step 5: Solve for x
    x = 539,803,979.52/19,614.40
  6. Step 6: Final answer
    x = 27,520.80

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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.