Home / 30,258.52-45,387.78-13,615.45

Finding the Fourth Proportional to 30,258.52, 45,387.78 and 13,615.45

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Solution

The fourth proportional to 30,258.52, 45,387.78 and 13,615.45 is: 20,423.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,258.52 : 45,387.78 = 13,615.45 : x
  2. Step 2: Convert to fraction form
    30,258.52/45,387.78 = 13,615.45/x
  3. Step 3: Cross multiply
    30,258.52x = 45,387.78 × 13,615.45
  4. Step 4: Simplify right side
    30,258.52x = 617,974,884.67
  5. Step 5: Solve for x
    x = 617,974,884.67/30,258.52
  6. Step 6: Final answer
    x = 20,423.17

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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.