Home / 30,862.76-42,598.64-18,117.68

Finding the Fourth Proportional to 30,862.76, 42,598.64 and 18,117.68

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Solution

The fourth proportional to 30,862.76, 42,598.64 and 18,117.68 is: 25,007.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,862.76 : 42,598.64 = 18,117.68 : x
  2. Step 2: Convert to fraction form
    30,862.76/42,598.64 = 18,117.68/x
  3. Step 3: Cross multiply
    30,862.76x = 42,598.64 × 18,117.68
  4. Step 4: Simplify right side
    30,862.76x = 771,788,527.96
  5. Step 5: Solve for x
    x = 771,788,527.96/30,862.76
  6. Step 6: Final answer
    x = 25,007.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.