Home / 12,312.48-16,988.90-7,275.54

Finding the Fourth Proportional to 12,312.48, 16,988.90 and 7,275.54

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Solution

The fourth proportional to 12,312.48, 16,988.90 and 7,275.54 is: 10,038.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,312.48 : 16,988.90 = 7,275.54 : x
  2. Step 2: Convert to fraction form
    12,312.48/16,988.90 = 7,275.54/x
  3. Step 3: Cross multiply
    12,312.48x = 16,988.90 × 7,275.54
  4. Step 4: Simplify right side
    12,312.48x = 123,603,421.51
  5. Step 5: Solve for x
    x = 123,603,421.51/12,312.48
  6. Step 6: Final answer
    x = 10,038.87

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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.