Home / 13,124.20-18,111.07-7,155.98

Finding the Fourth Proportional to 13,124.20, 18,111.07 and 7,155.98

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Solution

The fourth proportional to 13,124.20, 18,111.07 and 7,155.98 is: 9,875.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124.20 : 18,111.07 = 7,155.98 : x
  2. Step 2: Convert to fraction form
    13,124.20/18,111.07 = 7,155.98/x
  3. Step 3: Cross multiply
    13,124.20x = 18,111.07 × 7,155.98
  4. Step 4: Simplify right side
    13,124.20x = 129,602,502.63
  5. Step 5: Solve for x
    x = 129,602,502.63/13,124.20
  6. Step 6: Final answer
    x = 9,875.08

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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.