Home / 39,428.16-59,149.44-13,130.40

Finding the Fourth Proportional to 39,428.16, 59,149.44 and 13,130.40

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Solution

The fourth proportional to 39,428.16, 59,149.44 and 13,130.40 is: 19,698.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,428.16 : 59,149.44 = 13,130.40 : x
  2. Step 2: Convert to fraction form
    39,428.16/59,149.44 = 13,130.40/x
  3. Step 3: Cross multiply
    39,428.16x = 59,149.44 × 13,130.40
  4. Step 4: Simplify right side
    39,428.16x = 776,655,806.98
  5. Step 5: Solve for x
    x = 776,655,806.98/39,428.16
  6. Step 6: Final answer
    x = 19,698.00

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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.