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Finding the Fourth Proportional to 46,570.80, 69,856.20 and 13,287.60

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Solution

The fourth proportional to 46,570.80, 69,856.20 and 13,287.60 is: 19,931.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,570.80 : 69,856.20 = 13,287.60 : x
  2. Step 2: Convert to fraction form
    46,570.80/69,856.20 = 13,287.60/x
  3. Step 3: Cross multiply
    46,570.80x = 69,856.20 × 13,287.60
  4. Step 4: Simplify right side
    46,570.80x = 928,221,243.12
  5. Step 5: Solve for x
    x = 928,221,243.12/46,570.80
  6. Step 6: Final answer
    x = 19,931.40

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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.