Home / 30,665.60-45,989.76-13,154.48

Finding the Fourth Proportional to 30,665.60, 45,989.76 and 13,154.48

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Solution

The fourth proportional to 30,665.60, 45,989.76 and 13,154.48 is: 19,728.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,665.60 : 45,989.76 = 13,154.48 : x
  2. Step 2: Convert to fraction form
    30,665.60/45,989.76 = 13,154.48/x
  3. Step 3: Cross multiply
    30,665.60x = 45,989.76 × 13,154.48
  4. Step 4: Simplify right side
    30,665.60x = 604,971,378.12
  5. Step 5: Solve for x
    x = 604,971,378.12/30,665.60
  6. Step 6: Final answer
    x = 19,728.01

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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.