Home / 25,787.60-38,681.40-19,643.60

Finding the Fourth Proportional to 25,787.60, 38,681.40 and 19,643.60

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Solution

The fourth proportional to 25,787.60, 38,681.40 and 19,643.60 is: 29,465.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,787.60 : 38,681.40 = 19,643.60 : x
  2. Step 2: Convert to fraction form
    25,787.60/38,681.40 = 19,643.60/x
  3. Step 3: Cross multiply
    25,787.60x = 38,681.40 × 19,643.60
  4. Step 4: Simplify right side
    25,787.60x = 759,841,949.04
  5. Step 5: Solve for x
    x = 759,841,949.04/25,787.60
  6. Step 6: Final answer
    x = 29,465.40

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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.