Home / 31,780.02-47,675.56-13,070.36

Finding the Fourth Proportional to 31,780.02, 47,675.56 and 13,070.36

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Solution

The fourth proportional to 31,780.02, 47,675.56 and 13,070.36 is: 19,607.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,780.02 : 47,675.56 = 13,070.36 : x
  2. Step 2: Convert to fraction form
    31,780.02/47,675.56 = 13,070.36/x
  3. Step 3: Cross multiply
    31,780.02x = 47,675.56 × 13,070.36
  4. Step 4: Simplify right side
    31,780.02x = 623,136,732.40
  5. Step 5: Solve for x
    x = 623,136,732.40/31,780.02
  6. Step 6: Final answer
    x = 19,607.81

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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.