Home / 21,487.68-29,655.28-12,056.32

Finding the Fourth Proportional to 21,487.68, 29,655.28 and 12,056.32

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Solution

The fourth proportional to 21,487.68, 29,655.28 and 12,056.32 is: 16,639.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,487.68 : 29,655.28 = 12,056.32 : x
  2. Step 2: Convert to fraction form
    21,487.68/29,655.28 = 12,056.32/x
  3. Step 3: Cross multiply
    21,487.68x = 29,655.28 × 12,056.32
  4. Step 4: Simplify right side
    21,487.68x = 357,533,545.37
  5. Step 5: Solve for x
    x = 357,533,545.37/21,487.68
  6. Step 6: Final answer
    x = 16,639.00

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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.