Home / 30,693.13-42,356.93-18,753.93

Finding the Fourth Proportional to 30,693.13, 42,356.93 and 18,753.93

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Solution

The fourth proportional to 30,693.13, 42,356.93 and 18,753.93 is: 25,880.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,693.13 : 42,356.93 = 18,753.93 : x
  2. Step 2: Convert to fraction form
    30,693.13/42,356.93 = 18,753.93/x
  3. Step 3: Cross multiply
    30,693.13x = 42,356.93 × 18,753.93
  4. Step 4: Simplify right side
    30,693.13x = 794,358,806.47
  5. Step 5: Solve for x
    x = 794,358,806.47/30,693.13
  6. Step 6: Final answer
    x = 25,880.67

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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.