Home / 39,011.76-53,836.08-21,106.80

Finding the Fourth Proportional to 39,011.76, 53,836.08 and 21,106.80

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Solution

The fourth proportional to 39,011.76, 53,836.08 and 21,106.80 is: 29,127.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,011.76 : 53,836.08 = 21,106.80 : x
  2. Step 2: Convert to fraction form
    39,011.76/53,836.08 = 21,106.80/x
  3. Step 3: Cross multiply
    39,011.76x = 53,836.08 × 21,106.80
  4. Step 4: Simplify right side
    39,011.76x = 1,136,307,373.34
  5. Step 5: Solve for x
    x = 1,136,307,373.34/39,011.76
  6. Step 6: Final answer
    x = 29,127.30

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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.