Home / 39,957.68-55,119.48-28,038.80

Finding the Fourth Proportional to 39,957.68, 55,119.48 and 28,038.80

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Solution

The fourth proportional to 39,957.68, 55,119.48 and 28,038.80 is: 38,678.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,957.68 : 55,119.48 = 28,038.80 : x
  2. Step 2: Convert to fraction form
    39,957.68/55,119.48 = 28,038.80/x
  3. Step 3: Cross multiply
    39,957.68x = 55,119.48 × 28,038.80
  4. Step 4: Simplify right side
    39,957.68x = 1,545,484,075.82
  5. Step 5: Solve for x
    x = 1,545,484,075.82/39,957.68
  6. Step 6: Final answer
    x = 38,678.02

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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.