Home / 13,281.08-18,328.01-7,312.91

Finding the Fourth Proportional to 13,281.08, 18,328.01 and 7,312.91

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Solution

The fourth proportional to 13,281.08, 18,328.01 and 7,312.91 is: 10,091.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.08 : 18,328.01 = 7,312.91 : x
  2. Step 2: Convert to fraction form
    13,281.08/18,328.01 = 7,312.91/x
  3. Step 3: Cross multiply
    13,281.08x = 18,328.01 × 7,312.91
  4. Step 4: Simplify right side
    13,281.08x = 134,030,959.40
  5. Step 5: Solve for x
    x = 134,030,959.40/13,281.08
  6. Step 6: Final answer
    x = 10,091.88

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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.