Home / 12,870.40-19,305.96-4,549.24

Finding the Fourth Proportional to 12,870.40, 19,305.96 and 4,549.24

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Solution

The fourth proportional to 12,870.40, 19,305.96 and 4,549.24 is: 6,823.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,870.40 : 19,305.96 = 4,549.24 : x
  2. Step 2: Convert to fraction form
    12,870.40/19,305.96 = 4,549.24/x
  3. Step 3: Cross multiply
    12,870.40x = 19,305.96 × 4,549.24
  4. Step 4: Simplify right side
    12,870.40x = 87,827,445.47
  5. Step 5: Solve for x
    x = 87,827,445.47/12,870.40
  6. Step 6: Final answer
    x = 6,823.99

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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.