Home / 15,870.61-21,901.66-8,701.19

Finding the Fourth Proportional to 15,870.61, 21,901.66 and 8,701.19

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Solution

The fourth proportional to 15,870.61, 21,901.66 and 8,701.19 is: 12,007.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,870.61 : 21,901.66 = 8,701.19 : x
  2. Step 2: Convert to fraction form
    15,870.61/21,901.66 = 8,701.19/x
  3. Step 3: Cross multiply
    15,870.61x = 21,901.66 × 8,701.19
  4. Step 4: Simplify right side
    15,870.61x = 190,570,537.98
  5. Step 5: Solve for x
    x = 190,570,537.98/15,870.61
  6. Step 6: Final answer
    x = 12,007.77

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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.