Home / 25,746.80-35,526-15,138.56

Finding the Fourth Proportional to 25,746.80, 35,526 and 15,138.56

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Solution

The fourth proportional to 25,746.80, 35,526 and 15,138.56 is: 20,888.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,746.80 : 35,526 = 15,138.56 : x
  2. Step 2: Convert to fraction form
    25,746.80/35,526 = 15,138.56/x
  3. Step 3: Cross multiply
    25,746.80x = 35,526 × 15,138.56
  4. Step 4: Simplify right side
    25,746.80x = 537,812,482.56
  5. Step 5: Solve for x
    x = 537,812,482.56/25,746.80
  6. Step 6: Final answer
    x = 20,888.52

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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.