Home / 30,528.61-45,756-15,729.45

Finding the Fourth Proportional to 30,528.61, 45,756 and 15,729.45

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Solution

The fourth proportional to 30,528.61, 45,756 and 15,729.45 is: 23,575.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,528.61 : 45,756 = 15,729.45 : x
  2. Step 2: Convert to fraction form
    30,528.61/45,756 = 15,729.45/x
  3. Step 3: Cross multiply
    30,528.61x = 45,756 × 15,729.45
  4. Step 4: Simplify right side
    30,528.61x = 719,716,714.20
  5. Step 5: Solve for x
    x = 719,716,714.20/30,528.61
  6. Step 6: Final answer
    x = 23,575.16

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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.