Home / 35,421.60-53,132.40-18,775.20

Finding the Fourth Proportional to 35,421.60, 53,132.40 and 18,775.20

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Solution

The fourth proportional to 35,421.60, 53,132.40 and 18,775.20 is: 28,162.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,421.60 : 53,132.40 = 18,775.20 : x
  2. Step 2: Convert to fraction form
    35,421.60/53,132.40 = 18,775.20/x
  3. Step 3: Cross multiply
    35,421.60x = 53,132.40 × 18,775.20
  4. Step 4: Simplify right side
    35,421.60x = 997,571,436.48
  5. Step 5: Solve for x
    x = 997,571,436.48/35,421.60
  6. Step 6: Final answer
    x = 28,162.80

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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.