Home / 12,977.48-17,907.60-7,312.08

Finding the Fourth Proportional to 12,977.48, 17,907.60 and 7,312.08

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Solution

The fourth proportional to 12,977.48, 17,907.60 and 7,312.08 is: 10,089.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,977.48 : 17,907.60 = 7,312.08 : x
  2. Step 2: Convert to fraction form
    12,977.48/17,907.60 = 7,312.08/x
  3. Step 3: Cross multiply
    12,977.48x = 17,907.60 × 7,312.08
  4. Step 4: Simplify right side
    12,977.48x = 130,941,803.81
  5. Step 5: Solve for x
    x = 130,941,803.81/12,977.48
  6. Step 6: Final answer
    x = 10,089.93

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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.