Home / 30,148.02-45,215.88-11,421.66

Finding the Fourth Proportional to 30,148.02, 45,215.88 and 11,421.66

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Solution

The fourth proportional to 30,148.02, 45,215.88 and 11,421.66 is: 17,130.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,148.02 : 45,215.88 = 11,421.66 : x
  2. Step 2: Convert to fraction form
    30,148.02/45,215.88 = 11,421.66/x
  3. Step 3: Cross multiply
    30,148.02x = 45,215.88 × 11,421.66
  4. Step 4: Simplify right side
    30,148.02x = 516,440,407.96
  5. Step 5: Solve for x
    x = 516,440,407.96/30,148.02
  6. Step 6: Final answer
    x = 17,130.16

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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.