Home / 13,070.40-18,041.28-8,354.70

Finding the Fourth Proportional to 13,070.40, 18,041.28 and 8,354.70

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Solution

The fourth proportional to 13,070.40, 18,041.28 and 8,354.70 is: 11,532.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,070.40 : 18,041.28 = 8,354.70 : x
  2. Step 2: Convert to fraction form
    13,070.40/18,041.28 = 8,354.70/x
  3. Step 3: Cross multiply
    13,070.40x = 18,041.28 × 8,354.70
  4. Step 4: Simplify right side
    13,070.40x = 150,729,482.02
  5. Step 5: Solve for x
    x = 150,729,482.02/13,070.40
  6. Step 6: Final answer
    x = 11,532.12

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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.