Home / 13,870.08-19,140.88-7,901.76

Finding the Fourth Proportional to 13,870.08, 19,140.88 and 7,901.76

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Solution

The fourth proportional to 13,870.08, 19,140.88 and 7,901.76 is: 10,904.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,870.08 : 19,140.88 = 7,901.76 : x
  2. Step 2: Convert to fraction form
    13,870.08/19,140.88 = 7,901.76/x
  3. Step 3: Cross multiply
    13,870.08x = 19,140.88 × 7,901.76
  4. Step 4: Simplify right side
    13,870.08x = 151,246,639.95
  5. Step 5: Solve for x
    x = 151,246,639.95/13,870.08
  6. Step 6: Final answer
    x = 10,904.53

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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.