Home / 18,931.49-28,397.67-9,059.91

Finding the Fourth Proportional to 18,931.49, 28,397.67 and 9,059.91

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Solution

The fourth proportional to 18,931.49, 28,397.67 and 9,059.91 is: 13,590.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,931.49 : 28,397.67 = 9,059.91 : x
  2. Step 2: Convert to fraction form
    18,931.49/28,397.67 = 9,059.91/x
  3. Step 3: Cross multiply
    18,931.49x = 28,397.67 × 9,059.91
  4. Step 4: Simplify right side
    18,931.49x = 257,280,289.11
  5. Step 5: Solve for x
    x = 257,280,289.11/18,931.49
  6. Step 6: Final answer
    x = 13,590.07

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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.