Home / 39,428.42-59,143.53-13,135.28

Finding the Fourth Proportional to 39,428.42, 59,143.53 and 13,135.28

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Solution

The fourth proportional to 39,428.42, 59,143.53 and 13,135.28 is: 19,703.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,428.42 : 59,143.53 = 13,135.28 : x
  2. Step 2: Convert to fraction form
    39,428.42/59,143.53 = 13,135.28/x
  3. Step 3: Cross multiply
    39,428.42x = 59,143.53 × 13,135.28
  4. Step 4: Simplify right side
    39,428.42x = 776,866,826.74
  5. Step 5: Solve for x
    x = 776,866,826.74/39,428.42
  6. Step 6: Final answer
    x = 19,703.22

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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.