Home / 13,848.95-19,111.74-7,880.65

Finding the Fourth Proportional to 13,848.95, 19,111.74 and 7,880.65

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Solution

The fourth proportional to 13,848.95, 19,111.74 and 7,880.65 is: 10,875.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,848.95 : 19,111.74 = 7,880.65 : x
  2. Step 2: Convert to fraction form
    13,848.95/19,111.74 = 7,880.65/x
  3. Step 3: Cross multiply
    13,848.95x = 19,111.74 × 7,880.65
  4. Step 4: Simplify right side
    13,848.95x = 150,612,933.83
  5. Step 5: Solve for x
    x = 150,612,933.83/13,848.95
  6. Step 6: Final answer
    x = 10,875.40

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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.