Home / 15,439,733.95-21,306,421.69-8,913,142.75

Finding the Fourth Proportional to 15,439,733.95, 21,306,421.69 and 8,913,142.75

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Solution

The fourth proportional to 15,439,733.95, 21,306,421.69 and 8,913,142.75 is: 12,299,899.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439,733.95 : 21,306,421.69 = 8,913,142.75 : x
  2. Step 2: Convert to fraction form
    15,439,733.95/21,306,421.69 = 8,913,142.75/x
  3. Step 3: Cross multiply
    15,439,733.95x = 21,306,421.69 × 8,913,142.75
  4. Step 4: Simplify right side
    15,439,733.95x = 189,907,178,014,666.25
  5. Step 5: Solve for x
    x = 189,907,178,014,666.25/15,439,733.95
  6. Step 6: Final answer
    x = 12,299,899.64

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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.