Home / 21,715.77-32,578.43-12,360.19

Finding the Fourth Proportional to 21,715.77, 32,578.43 and 12,360.19

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Solution

The fourth proportional to 21,715.77, 32,578.43 and 12,360.19 is: 18,543.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,715.77 : 32,578.43 = 12,360.19 : x
  2. Step 2: Convert to fraction form
    21,715.77/32,578.43 = 12,360.19/x
  3. Step 3: Cross multiply
    21,715.77x = 32,578.43 × 12,360.19
  4. Step 4: Simplify right side
    21,715.77x = 402,675,421.81
  5. Step 5: Solve for x
    x = 402,675,421.81/21,715.77
  6. Step 6: Final answer
    x = 18,543.00

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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.