Home / 28,574.60-42,890.70-13,795.40

Finding the Fourth Proportional to 28,574.60, 42,890.70 and 13,795.40

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Solution

The fourth proportional to 28,574.60, 42,890.70 and 13,795.40 is: 20,707.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,574.60 : 42,890.70 = 13,795.40 : x
  2. Step 2: Convert to fraction form
    28,574.60/42,890.70 = 13,795.40/x
  3. Step 3: Cross multiply
    28,574.60x = 42,890.70 × 13,795.40
  4. Step 4: Simplify right side
    28,574.60x = 591,694,362.78
  5. Step 5: Solve for x
    x = 591,694,362.78/28,574.60
  6. Step 6: Final answer
    x = 20,707.00

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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.