Home / 25,382.90-35,032.47-15,312.81

Finding the Fourth Proportional to 25,382.90, 35,032.47 and 15,312.81

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Solution

The fourth proportional to 25,382.90, 35,032.47 and 15,312.81 is: 21,134.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,382.90 : 35,032.47 = 15,312.81 : x
  2. Step 2: Convert to fraction form
    25,382.90/35,032.47 = 15,312.81/x
  3. Step 3: Cross multiply
    25,382.90x = 35,032.47 × 15,312.81
  4. Step 4: Simplify right side
    25,382.90x = 536,445,630.89
  5. Step 5: Solve for x
    x = 536,445,630.89/25,382.90
  6. Step 6: Final answer
    x = 21,134.13

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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.